diff --git a/src/main/java/org/hostsharing/hsadminng/service/AssetService.java b/src/main/java/org/hostsharing/hsadminng/service/AssetService.java
index 7ad083de..dd60f120 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/AssetService.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/AssetService.java
@@ -4,6 +4,7 @@ import org.hostsharing.hsadminng.domain.Asset;
 import org.hostsharing.hsadminng.repository.AssetRepository;
 import org.hostsharing.hsadminng.service.dto.AssetDTO;
 import org.hostsharing.hsadminng.service.mapper.AssetMapper;
+import org.hostsharing.hsadminng.web.rest.errors.BadRequestAlertException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.data.domain.Page;
@@ -23,11 +24,12 @@ public class AssetService implements IdToDtoResolver<AssetDTO> {
 
     private final Logger log = LoggerFactory.getLogger(AssetService.class);
 
+    private final EntityManager em;
+
     private final AssetRepository assetRepository;
 
     private final AssetMapper assetMapper;
     private final AssetValidator assetValidator;
-    private final EntityManager em;
 
     public AssetService(final EntityManager em, final AssetRepository assetRepository, final AssetMapper assetMapper, final AssetValidator assetValidator) {
         this.em = em;
@@ -86,6 +88,7 @@ public class AssetService implements IdToDtoResolver<AssetDTO> {
      */
     public void delete(Long id) {
         log.debug("Request to delete Asset : {}", id);
-        assetRepository.deleteById(id);
+
+        throw new BadRequestAlertException("Asset transactions are immutable", Asset.ENTITY_NAME, "assetTransactionImmutable");
     }
 }
diff --git a/src/main/java/org/hostsharing/hsadminng/service/MembershipService.java b/src/main/java/org/hostsharing/hsadminng/service/MembershipService.java
index 473f5d7e..82e365d2 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/MembershipService.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/MembershipService.java
@@ -12,6 +12,7 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import javax.persistence.EntityManager;
 import java.util.Optional;
 
 /**
@@ -23,15 +24,19 @@ public class MembershipService implements IdToDtoResolver<MembershipDTO> {
 
     private final Logger log = LoggerFactory.getLogger(MembershipService.class);
 
+    private final EntityManager em;
+
     private final MembershipValidator membershipValidator;
 
     private final MembershipRepository membershipRepository;
 
     private final MembershipMapper membershipMapper;
 
-    public MembershipService(final MembershipValidator membershipValidator,
+    public MembershipService(final EntityManager em,
+                             final MembershipValidator membershipValidator,
                              final MembershipRepository membershipRepository,
                              final MembershipMapper membershipMapper) {
+        this.em = em;
         this.membershipValidator = membershipValidator;
         this.membershipRepository = membershipRepository;
         this.membershipMapper = membershipMapper;
@@ -50,6 +55,8 @@ public class MembershipService implements IdToDtoResolver<MembershipDTO> {
 
         Membership membership = membershipMapper.toEntity(membershipDTO);
         membership = membershipRepository.save(membership);
+        em.flush();
+        em.refresh(membership);
         return membershipMapper.toDto(membership);
     }
 
diff --git a/src/main/java/org/hostsharing/hsadminng/service/ShareService.java b/src/main/java/org/hostsharing/hsadminng/service/ShareService.java
index c9ff868b..4fbc8bec 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/ShareService.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/ShareService.java
@@ -12,6 +12,7 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import javax.persistence.EntityManager;
 import java.util.Optional;
 
 /**
@@ -23,13 +24,16 @@ public class ShareService implements IdToDtoResolver<ShareDTO> {
 
     private final Logger log = LoggerFactory.getLogger(ShareService.class);
 
+    private final EntityManager em;
+
     private final ShareRepository shareRepository;
 
     private final ShareMapper shareMapper;
 
     private final ShareValidator shareValidator;
 
-    public ShareService(ShareRepository shareRepository, ShareMapper shareMapper, ShareValidator shareValidator) {
+    public ShareService(final EntityManager em, final ShareRepository shareRepository, final ShareMapper shareMapper, final ShareValidator shareValidator) {
+        this.em = em;
         this.shareRepository = shareRepository;
         this.shareMapper = shareMapper;
         this.shareValidator = shareValidator;
@@ -48,6 +52,8 @@ public class ShareService implements IdToDtoResolver<ShareDTO> {
 
         Share share = shareMapper.toEntity(shareDTO);
         share = shareRepository.save(share);
+        em.flush();
+        em.refresh(share);
         return shareMapper.toDto(share);
     }
 
diff --git a/src/main/java/org/hostsharing/hsadminng/service/dto/AssetDTO.java b/src/main/java/org/hostsharing/hsadminng/service/dto/AssetDTO.java
index 173c7c1f..87dca80e 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/dto/AssetDTO.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/dto/AssetDTO.java
@@ -47,8 +47,8 @@ public class AssetDTO implements Serializable, AccessMappings {
     @AccessFor(init = Role.ADMIN, update = Role.ADMIN, read = {Role.CONTRACTUAL_CONTACT, Role.FINANCIAL_CONTACT})
     private Long membershipId;
 
-    @AccessFor(init = Role.ANYBODY, update = Role.ANYBODY, read = {Role.CONTRACTUAL_CONTACT, Role.FINANCIAL_CONTACT})
-    private String membershipDisplayReference;
+    @AccessFor(init=Role.ANYBODY, update = Role.ANYBODY, read = {Role.CONTRACTUAL_CONTACT, Role.FINANCIAL_CONTACT})
+    private String membershipDisplayLabel;
 
     public Long getId() {
         return id;
@@ -106,12 +106,12 @@ public class AssetDTO implements Serializable, AccessMappings {
         this.membershipId = membershipId;
     }
 
-    public String getMembershipDisplayReference() {
-        return membershipDisplayReference;
+    public String getMembershipDisplayLabel() {
+        return membershipDisplayLabel;
     }
 
-    public void setMembershipDisplayReference(String membershipDisplayReference) {
-        this.membershipDisplayReference = membershipDisplayReference;
+    public void setMembershipDisplayLabel(String membershipDisplayLabel) {
+        this.membershipDisplayLabel = membershipDisplayLabel;
     }
 
     @Override
@@ -145,7 +145,7 @@ public class AssetDTO implements Serializable, AccessMappings {
             ", amount=" + getAmount() +
             ", remark='" + getRemark() + "'" +
             ", membership=" + getMembershipId() +
-            ", membership='" + getMembershipDisplayReference() + "'" +
+            ", membership='" + getMembershipDisplayLabel() + "'" +
             "}";
     }
 
diff --git a/src/main/java/org/hostsharing/hsadminng/service/dto/CustomerDTO.java b/src/main/java/org/hostsharing/hsadminng/service/dto/CustomerDTO.java
index c1b42b75..85908ac9 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/dto/CustomerDTO.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/dto/CustomerDTO.java
@@ -85,6 +85,9 @@ public class CustomerDTO extends FluentBuilder<CustomerDTO> implements AccessMap
     @AccessFor(init = Role.ADMIN, update = Role.SUPPORTER, read = Role.SUPPORTER)
     private String remark;
 
+    @AccessFor(init=Role.ANYBODY, update=Role.ANYBODY, read = Role.ANY_CUSTOMER_USER)
+    private String displayLabel;
+
     public Long getId() {
         return id;
     }
@@ -213,6 +216,14 @@ public class CustomerDTO extends FluentBuilder<CustomerDTO> implements AccessMap
         this.remark = remark;
     }
 
+    public String getDisplayLabel() {
+        return displayLabel;
+    }
+
+    public void setDisplayLabel(final String displayLabel) {
+        this.displayLabel = displayLabel;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) {
diff --git a/src/main/java/org/hostsharing/hsadminng/service/dto/MembershipDTO.java b/src/main/java/org/hostsharing/hsadminng/service/dto/MembershipDTO.java
index d8bc972f..7efeaaba 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/dto/MembershipDTO.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/dto/MembershipDTO.java
@@ -46,8 +46,11 @@ public class MembershipDTO extends FluentBuilder<MembershipDTO> implements Seria
     @AccessFor(init = Role.ADMIN, read = {Role.CONTRACTUAL_CONTACT, Role.FINANCIAL_CONTACT})
     private String customerPrefix;
 
-    @AccessFor(read = {Role.CONTRACTUAL_CONTACT, Role.FINANCIAL_CONTACT})
-    private String membershipDisplayReference;
+    @AccessFor(init = Role.ANYBODY, update = Role.ANYBODY, read = Role.FINANCIAL_CONTACT)
+    private String displayLabel;
+
+    @AccessFor(init = Role.ANYBODY, update = Role.ANYBODY, read = Role.FINANCIAL_CONTACT)
+    private String customerDisplayLabel;
 
     public Long getId() {
         return id;
@@ -113,12 +116,20 @@ public class MembershipDTO extends FluentBuilder<MembershipDTO> implements Seria
         this.customerPrefix = customerPrefix;
     }
 
-    private String getMembershipDisplayReference() {
-        return membershipDisplayReference;
+    public String getDisplayLabel() {
+        return displayLabel;
     }
 
-    public void setMembershipDisplayReference(final String membershipDisplayReference) {
-        this.membershipDisplayReference = membershipDisplayReference;
+    public void setDisplayLabel(final String displayLabel) {
+        this.displayLabel = displayLabel;
+    }
+
+    public String getCustomerDisplayLabel() {
+        return customerDisplayLabel;
+    }
+
+    public void setCustomerDisplayLabel(final String customerDisplayLabel) {
+        this.customerDisplayLabel = customerDisplayLabel;
     }
 
     @Override
diff --git a/src/main/java/org/hostsharing/hsadminng/service/dto/ShareDTO.java b/src/main/java/org/hostsharing/hsadminng/service/dto/ShareDTO.java
index cb61e088..8bd1daa4 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/dto/ShareDTO.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/dto/ShareDTO.java
@@ -48,7 +48,7 @@ public class ShareDTO implements Serializable {
     private Long membershipId;
 
     @AccessFor(read = {Role.CONTRACTUAL_CONTACT, Role.FINANCIAL_CONTACT})
-    private String membershipDisplayReference;
+    private String membershipDisplayLabel;
 
     public Long getId() {
         return id;
@@ -106,12 +106,12 @@ public class ShareDTO implements Serializable {
         this.membershipId = membershipId;
     }
 
-    public String getMembershipDisplayReference() {
-        return membershipDisplayReference;
+    public String getMembershipDisplayLabel() {
+        return membershipDisplayLabel;
     }
 
-    public void setMembershipDisplayReference(String membershipDisplayReference) {
-        this.membershipDisplayReference = membershipDisplayReference;
+    public void setMembershipDisplayLabel(String membershipDisplayLabel) {
+        this.membershipDisplayLabel = membershipDisplayLabel;
     }
 
     @Override
@@ -145,7 +145,7 @@ public class ShareDTO implements Serializable {
             ", quantity=" + getQuantity() +
             ", remark='" + getRemark() + "'" +
             ", membership=" + getMembershipId() +
-            ", membership='" + getMembershipDisplayReference() + "'" +
+            ", membership='" + getMembershipDisplayLabel() + "'" +
             "}";
     }
 }
diff --git a/src/main/java/org/hostsharing/hsadminng/service/mapper/AssetMapper.java b/src/main/java/org/hostsharing/hsadminng/service/mapper/AssetMapper.java
index e4e4a530..293d87e8 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/mapper/AssetMapper.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/mapper/AssetMapper.java
@@ -1,16 +1,12 @@
 package org.hostsharing.hsadminng.service.mapper;
 
 import org.hostsharing.hsadminng.domain.Asset;
-import org.hostsharing.hsadminng.domain.Customer;
-import org.hostsharing.hsadminng.domain.Membership;
 import org.hostsharing.hsadminng.service.dto.AssetDTO;
 import org.mapstruct.AfterMapping;
 import org.mapstruct.Mapper;
 import org.mapstruct.Mapping;
 import org.mapstruct.MappingTarget;
 
-import java.util.Objects;
-
 /**
  * Mapper for the entity Asset and its DTO AssetDTO.
  */
@@ -18,19 +14,12 @@ import java.util.Objects;
 public interface AssetMapper extends EntityMapper<AssetDTO, Asset> {
 
     @Mapping(source = "membership.id", target = "membershipId")
-    @Mapping(target = "membershipDisplayReference", ignore = true)
+    @Mapping(target = "membershipDisplayLabel", ignore = true)
     AssetDTO toDto(Asset asset);
 
     @AfterMapping
-    default void setMembershipDisplayReference(final @MappingTarget AssetDTO dto, final Asset entity) {
-        // TODO: rather use method extracted from MembershipMaper.setMembershipDisplayReference() to avoid duplicate code
-        final Membership membership = entity.getMembership();
-        final Customer customer = membership.getCustomer();
-        dto.setMembershipDisplayReference(customer.getReference()
-            + ":" + customer.getPrefix()
-            + " [" + customer.getName() + "] "
-            + membership.getAdmissionDocumentDate().toString() + " - "
-            + Objects.toString(membership.getCancellationDocumentDate(), ""));
+    default void setMembershipDisplayLabel(final @MappingTarget AssetDTO dto, final Asset entity) {
+        dto.setMembershipDisplayLabel(MembershipMapper.displayLabel(entity.getMembership()));
     }
 
     @Mapping(source = "membershipId", target = "membership")
diff --git a/src/main/java/org/hostsharing/hsadminng/service/mapper/CustomerMapper.java b/src/main/java/org/hostsharing/hsadminng/service/mapper/CustomerMapper.java
index 6c9c204a..ced8f394 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/mapper/CustomerMapper.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/mapper/CustomerMapper.java
@@ -1,9 +1,11 @@
 package org.hostsharing.hsadminng.service.mapper;
 
-import org.hostsharing.hsadminng.domain.*;
+import org.hostsharing.hsadminng.domain.Customer;
 import org.hostsharing.hsadminng.service.dto.CustomerDTO;
-
-import org.mapstruct.*;
+import org.mapstruct.AfterMapping;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.MappingTarget;
 
 /**
  * Mapper for the entity Customer and its DTO CustomerDTO.
@@ -11,6 +13,18 @@ import org.mapstruct.*;
 @Mapper(componentModel = "spring", uses = {})
 public interface CustomerMapper extends EntityMapper<CustomerDTO, Customer> {
 
+    static String displayLabel(Customer customer) {
+        return  customer.getName()
+            + " [" + customer.getReference() + ":" + customer.getPrefix() +"]";
+    }
+
+    @Mapping(target = "displayLabel", ignore = true)
+    CustomerDTO toDto(Customer customer);
+
+    @AfterMapping
+    default void setDisplayLabel(final @MappingTarget CustomerDTO dto, final Customer entity) {
+        dto.setDisplayLabel(displayLabel(entity));
+    }
 
     @Mapping(target = "memberships", ignore = true)
     @Mapping(target = "sepamandates", ignore = true)
diff --git a/src/main/java/org/hostsharing/hsadminng/service/mapper/MembershipMapper.java b/src/main/java/org/hostsharing/hsadminng/service/mapper/MembershipMapper.java
index 3ef2c51b..ef2e5a47 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/mapper/MembershipMapper.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/mapper/MembershipMapper.java
@@ -16,21 +16,25 @@ import java.util.Objects;
 @Mapper(componentModel = "spring", uses = {CustomerMapper.class})
 public interface MembershipMapper extends EntityMapper<MembershipDTO, Membership> {
 
+    static String displayLabel(final Membership entity) {
+        final Customer customer = entity.getCustomer();
+        return CustomerMapper.displayLabel(customer) + " "
+            + Objects.toString(entity.getAdmissionDocumentDate(), "") + " - "
+            + Objects.toString(entity.getCancellationDocumentDate(), "...");
+    }
+
     @Mapping(source = "customer.id", target = "customerId")
     @Mapping(source = "customer.prefix", target = "customerPrefix")
-    @Mapping(target = "membershipDisplayReference", ignore = true)
+    @Mapping(target = "displayLabel", ignore = true)
+    @Mapping(target = "customerDisplayLabel", ignore = true)
     MembershipDTO toDto(Membership membership);
 
     // TODO BLOG HOWTO: multi-field display reference for selection lists
     //  also change the filed in the option list in *-update.html
     @AfterMapping
-    default void setMembershipDisplayReference(final @MappingTarget MembershipDTO dto, final Membership entity) {
-        final Customer customer = entity.getCustomer();
-        dto.setMembershipDisplayReference(customer.getReference()
-            + ":" + customer.getPrefix()
-            + " [" + customer.getName() + "] "
-            + Objects.toString(entity.getAdmissionDocumentDate()) + " - "
-            + Objects.toString(entity.getCancellationDocumentDate(), ""));
+    default void setMembershipDisplayLabel(final @MappingTarget MembershipDTO dto, final Membership entity) {
+        dto.setDisplayLabel(displayLabel(entity));
+        dto.setCustomerDisplayLabel(CustomerMapper.displayLabel(entity.getCustomer()));
     }
 
     @Mapping(target = "shares", ignore = true)
diff --git a/src/main/java/org/hostsharing/hsadminng/service/mapper/ShareMapper.java b/src/main/java/org/hostsharing/hsadminng/service/mapper/ShareMapper.java
index 775ca7be..80ddc52b 100644
--- a/src/main/java/org/hostsharing/hsadminng/service/mapper/ShareMapper.java
+++ b/src/main/java/org/hostsharing/hsadminng/service/mapper/ShareMapper.java
@@ -2,8 +2,10 @@ package org.hostsharing.hsadminng.service.mapper;
 
 import org.hostsharing.hsadminng.domain.Share;
 import org.hostsharing.hsadminng.service.dto.ShareDTO;
+import org.mapstruct.AfterMapping;
 import org.mapstruct.Mapper;
 import org.mapstruct.Mapping;
+import org.mapstruct.MappingTarget;
 
 /**
  * Mapper for the entity Share and its DTO ShareDTO.
@@ -12,9 +14,14 @@ import org.mapstruct.Mapping;
 public interface ShareMapper extends EntityMapper<ShareDTO, Share> {
 
     @Mapping(source = "membership.id", target = "membershipId")
-    @Mapping(source = "membership.admissionDocumentDate", target = "membershipDisplayReference")
+    @Mapping(target = "membershipDisplayLabel", ignore = true)
     ShareDTO toDto(Share share);
 
+    @AfterMapping
+    default void setMembershipDisplayLabel(final @MappingTarget ShareDTO dto, final Share entity) {
+        dto.setMembershipDisplayLabel(MembershipMapper.displayLabel(entity.getMembership()));
+    }
+
     @Mapping(source = "membershipId", target = "membership")
     Share toEntity(ShareDTO shareDTO);
 
diff --git a/src/main/webapp/app/entities/asset/asset-detail.component.html b/src/main/webapp/app/entities/asset/asset-detail.component.html
index d31955d3..d092b737 100644
--- a/src/main/webapp/app/entities/asset/asset-detail.component.html
+++ b/src/main/webapp/app/entities/asset/asset-detail.component.html
@@ -1,7 +1,7 @@
 <div class="row justify-content-center">
     <div class="col-8">
         <div *ngIf="asset">
-            <h2><span jhiTranslate="hsadminNgApp.asset.detail.title">Asset</span> {{asset.id}}</h2>
+            <h2><span jhiTranslate="hsadminNgApp.asset.detail.title">Asset</span>: #{{asset.id}} - {{asset.membershipDisplayLabel}}</h2>
             <hr>
             <jhi-alert-error></jhi-alert-error>
             <dl class="row-md jh-entity-details">
@@ -28,7 +28,7 @@
                 <dt><span jhiTranslate="hsadminNgApp.asset.membership">Membership</span></dt>
                 <dd>
                     <div *ngIf="asset.membershipId">
-                        <a [routerLink]="['/membership', asset.membershipId, 'view']">{{asset.membershipDisplayReference}}</a>
+                        <a [routerLink]="['/membership', asset.membershipId, 'view']">{{asset.membershipDisplayLabel}}</a>
                     </div>
                 </dd>
             </dl>
diff --git a/src/main/webapp/app/entities/asset/asset-update.component.html b/src/main/webapp/app/entities/asset/asset-update.component.html
index c11e140a..951db0b4 100644
--- a/src/main/webapp/app/entities/asset/asset-update.component.html
+++ b/src/main/webapp/app/entities/asset/asset-update.component.html
@@ -89,7 +89,7 @@
                     <label class="form-control-label" jhiTranslate="hsadminNgApp.asset.membership" for="field_membership">Membership</label>
                     <select class="form-control" id="field_membership" name="membership" [(ngModel)]="asset.membershipId"  required>
                         <option *ngIf="!editForm.value.membership" [ngValue]="null" selected></option>
-                        <option [ngValue]="membershipOption.id" *ngFor="let membershipOption of memberships; trackBy: trackMembershipById">{{membershipOption.membershipDisplayReference}}</option>
+                        <option [ngValue]="membershipOption.id" *ngFor="let membershipOption of memberships; trackBy: trackMembershipById">{{membershipOption.displayLabel}}</option>
                     </select>
                 </div>
                 <div [hidden]="!(editForm.controls.membership?.dirty && editForm.controls.membership?.invalid)">
diff --git a/src/main/webapp/app/entities/asset/asset.component.html b/src/main/webapp/app/entities/asset/asset.component.html
index 29ac04a6..8472107d 100644
--- a/src/main/webapp/app/entities/asset/asset.component.html
+++ b/src/main/webapp/app/entities/asset/asset.component.html
@@ -19,8 +19,7 @@
             <th jhiSortBy="valueDate"><span jhiTranslate="hsadminNgApp.asset.valueDate">Value Date</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="action"><span jhiTranslate="hsadminNgApp.asset.action">Action</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="amount"><span jhiTranslate="hsadminNgApp.asset.amount">Amount</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="remark"><span jhiTranslate="hsadminNgApp.asset.remark">Remark</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="membershipDisplayReference"><span jhiTranslate="hsadminNgApp.asset.membership">Membership</span> <fa-icon [icon]="'sort'"></fa-icon></th>
+            <th jhiSortBy="membershipDisplayLabel"><span jhiTranslate="hsadminNgApp.asset.membership">Membership</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th></th>
             </tr>
             </thead>
@@ -31,10 +30,9 @@
                 <td>{{asset.valueDate | date:'mediumDate'}}</td>
                 <td jhiTranslate="{{'hsadminNgApp.AssetAction.' + asset.action}}">{{asset.action}}</td>
                 <td>{{asset.amount}}</td>
-                <td>{{asset.remark}}</td>
                 <td>
                     <div *ngIf="asset.membershipId">
-                        <a [routerLink]="['../membership', asset.membershipId , 'view' ]" >{{asset.membershipDisplayReference}}</a>
+                        <a [routerLink]="['../membership', asset.membershipId , 'view' ]" >{{asset.membershipDisplayLabel}}</a>
                     </div>
                 </td>
                 <td class="text-right">
diff --git a/src/main/webapp/app/entities/customer/customer-detail.component.html b/src/main/webapp/app/entities/customer/customer-detail.component.html
index 93c22ade..3a74ce9e 100644
--- a/src/main/webapp/app/entities/customer/customer-detail.component.html
+++ b/src/main/webapp/app/entities/customer/customer-detail.component.html
@@ -1,7 +1,7 @@
 <div class="row justify-content-center">
     <div class="col-8">
         <div *ngIf="customer">
-            <h2><span jhiTranslate="hsadminNgApp.customer.detail.title">Customer</span> {{customer.id}}</h2>
+            <h2><span jhiTranslate="hsadminNgApp.customer.detail.title">Customer</span>: {{customer.displayLabel}}</h2>
             <hr>
             <jhi-alert-error></jhi-alert-error>
             <dl class="row-md jh-entity-details">
diff --git a/src/main/webapp/app/entities/customer/customer.component.html b/src/main/webapp/app/entities/customer/customer.component.html
index afb4fb12..c655cc04 100644
--- a/src/main/webapp/app/entities/customer/customer.component.html
+++ b/src/main/webapp/app/entities/customer/customer.component.html
@@ -18,18 +18,7 @@
             <th jhiSortBy="reference"><span jhiTranslate="hsadminNgApp.customer.reference">Reference</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="prefix"><span jhiTranslate="hsadminNgApp.customer.prefix">Prefix</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="name"><span jhiTranslate="hsadminNgApp.customer.name">Name</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="kind"><span jhiTranslate="hsadminNgApp.customer.kind">Kind</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="birthDate"><span jhiTranslate="hsadminNgApp.customer.birthDate">Birth Date</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="birthPlace"><span jhiTranslate="hsadminNgApp.customer.birthPlace">Birth Place</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="registrationCourt"><span jhiTranslate="hsadminNgApp.customer.registrationCourt">Registration Court</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="registrationNumber"><span jhiTranslate="hsadminNgApp.customer.registrationNumber">Registration Number</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="vatRegion"><span jhiTranslate="hsadminNgApp.customer.vatRegion">Vat Region</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="vatNumber"><span jhiTranslate="hsadminNgApp.customer.vatNumber">Vat Number</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="contractualSalutation"><span jhiTranslate="hsadminNgApp.customer.contractualSalutation">Contractual Salutation</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="contractualAddress"><span jhiTranslate="hsadminNgApp.customer.contractualAddress">Contractual Address</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="billingSalutation"><span jhiTranslate="hsadminNgApp.customer.billingSalutation">Billing Salutation</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="billingAddress"><span jhiTranslate="hsadminNgApp.customer.billingAddress">Billing Address</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="remark"><span jhiTranslate="hsadminNgApp.customer.remark">Remark</span> <fa-icon [icon]="'sort'"></fa-icon></th>
+            <th jhiSortBy="kind"><span jhiTranslate="hsadminNgApp.customer.kind">Kind</span> <fa-icon [icon]="'sort'"></fa-icon></thn></th>
             <th></th>
             </tr>
             </thead>
@@ -40,17 +29,6 @@
                 <td>{{customer.prefix}}</td>
                 <td>{{customer.name}}</td>
                 <td jhiTranslate="{{'hsadminNgApp.CustomerKind.' + customer.kind}}">{{customer.kind}}</td>
-                <td>{{customer.birthDate | date:'mediumDate'}}</td>
-                <td>{{customer.birthPlace}}</td>
-                <td>{{customer.registrationCourt}}</td>
-                <td>{{customer.registrationNumber}}</td>
-                <td jhiTranslate="{{'hsadminNgApp.VatRegion.' + customer.vatRegion}}">{{customer.vatRegion}}</td>
-                <td>{{customer.vatNumber}}</td>
-                <td>{{customer.contractualSalutation}}</td>
-                <td>{{customer.contractualAddress}}</td>
-                <td>{{customer.billingSalutation}}</td>
-                <td>{{customer.billingAddress}}</td>
-                <td>{{customer.remark}}</td>
                 <td class="text-right">
                     <div class="btn-group flex-btn-group-container">
                         <button type="submit"
diff --git a/src/main/webapp/app/entities/membership/membership-detail.component.html b/src/main/webapp/app/entities/membership/membership-detail.component.html
index 3115c10a..77601e66 100644
--- a/src/main/webapp/app/entities/membership/membership-detail.component.html
+++ b/src/main/webapp/app/entities/membership/membership-detail.component.html
@@ -1,7 +1,7 @@
 <div class="row justify-content-center">
     <div class="col-8">
         <div *ngIf="membership">
-            <h2><span jhiTranslate="hsadminNgApp.membership.detail.title">Membership</span> {{membership.id}}</h2>
+            <h2><span jhiTranslate="hsadminNgApp.membership.detail.title">Membership</span>: {{membership.displayLabel}}</h2>
             <hr>
             <jhi-alert-error></jhi-alert-error>
             <dl class="row-md jh-entity-details">
@@ -28,7 +28,7 @@
                 <dt><span jhiTranslate="hsadminNgApp.membership.customer">Customer</span></dt>
                 <dd>
                     <div *ngIf="membership.customerId">
-                        <a [routerLink]="['/customer', membership.customerId, 'view']">{{membership.customerPrefix}}</a>
+                        <a [routerLink]="['/customer', membership.customerId, 'view']">{{membership.customerDisplayLabel}}</a>
                     </div>
                 </dd>
             </dl>
diff --git a/src/main/webapp/app/entities/membership/membership-update.component.html b/src/main/webapp/app/entities/membership/membership-update.component.html
index 118a6127..8a04c9e2 100644
--- a/src/main/webapp/app/entities/membership/membership-update.component.html
+++ b/src/main/webapp/app/entities/membership/membership-update.component.html
@@ -77,7 +77,7 @@
                     <label class="form-control-label" jhiTranslate="hsadminNgApp.membership.customer" for="field_customer">Customer</label>
                     <select class="form-control" id="field_customer" name="customer" [(ngModel)]="membership.customerId"  required>
                         <option *ngIf="!editForm.value.customer" [ngValue]="null" selected></option>
-                        <option [ngValue]="customerOption.id" *ngFor="let customerOption of customers; trackBy: trackCustomerById">{{customerOption.prefix}}</option>
+                        <option [ngValue]="customerOption.id" *ngFor="let customerOption of customers; trackBy: trackCustomerById">{{customerOption.displayLabel}}</option>
                     </select>
                 </div>
                 <div [hidden]="!(editForm.controls.customer?.dirty && editForm.controls.customer?.invalid)">
diff --git a/src/main/webapp/app/entities/membership/membership.component.html b/src/main/webapp/app/entities/membership/membership.component.html
index 82375faf..8f141466 100644
--- a/src/main/webapp/app/entities/membership/membership.component.html
+++ b/src/main/webapp/app/entities/membership/membership.component.html
@@ -19,7 +19,6 @@
             <th jhiSortBy="cancellationDocumentDate"><span jhiTranslate="hsadminNgApp.membership.cancellationDocumentDate">Cancellation Document Date</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="memberFromDate"><span jhiTranslate="hsadminNgApp.membership.memberFromDate">Member From Date</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="memberUntilDate"><span jhiTranslate="hsadminNgApp.membership.memberUntilDate">Member Until Date</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="remark"><span jhiTranslate="hsadminNgApp.membership.remark">Remark</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="customerPrefix"><span jhiTranslate="hsadminNgApp.membership.customer">Customer</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th></th>
             </tr>
@@ -28,13 +27,12 @@
             <tr *ngFor="let membership of memberships ;trackBy: trackId">
                 <td><a [routerLink]="['/membership', membership.id, 'view' ]">{{membership.id}}</a></td>
                 <td>{{membership.admissionDocumentDate | date:'mediumDate'}}</td>
-                <td>{{membership.cancellationDocumentDate | date:'mediumDate'}}</td>
+                <td>{{membership.cancellationDocumentDate | date:'mediumDsate'}}</td>
                 <td>{{membership.memberFromDate | date:'mediumDate'}}</td>
                 <td>{{membership.memberUntilDate | date:'mediumDate'}}</td>
-                <td>{{membership.remark}}</td>
                 <td>
                     <div *ngIf="membership.customerId">
-                        <a [routerLink]="['../customer', membership.customerId , 'view' ]" >{{membership.customerPrefix}}</a>
+                        <a [routerLink]="['../customer', membership.customerId , 'view' ]" >{{membership.customerDisplayLabel}}</a>
                     </div>
                 </td>
                 <td class="text-right">
diff --git a/src/main/webapp/app/entities/share/share-detail.component.html b/src/main/webapp/app/entities/share/share-detail.component.html
index d64180ab..bb1dfd9f 100644
--- a/src/main/webapp/app/entities/share/share-detail.component.html
+++ b/src/main/webapp/app/entities/share/share-detail.component.html
@@ -1,7 +1,7 @@
 <div class="row justify-content-center">
     <div class="col-8">
         <div *ngIf="share">
-            <h2><span jhiTranslate="hsadminNgApp.share.detail.title">Share</span> {{share.id}}</h2>
+            <h2><span jhiTranslate="hsadminNgApp.share.detail.title">Share</span>: #{{share.id}} - {{share.membershipDisplayLabel}}</h2>
             <hr>
             <jhi-alert-error></jhi-alert-error>
             <dl class="row-md jh-entity-details">
@@ -28,7 +28,7 @@
                 <dt><span jhiTranslate="hsadminNgApp.share.membership">Membership</span></dt>
                 <dd>
                     <div *ngIf="share.membershipId">
-                        <a [routerLink]="['/membership', share.membershipId, 'view']">{{share.membershipDisplayReference}}</a>
+                        <a [routerLink]="['/membership', share.membershipId, 'view']">{{share.membershipDisplayLabel}}</a>
                     </div>
                 </dd>
             </dl>
diff --git a/src/main/webapp/app/entities/share/share-update.component.html b/src/main/webapp/app/entities/share/share-update.component.html
index 4f077e99..faf87e8a 100644
--- a/src/main/webapp/app/entities/share/share-update.component.html
+++ b/src/main/webapp/app/entities/share/share-update.component.html
@@ -85,7 +85,7 @@
                     <label class="form-control-label" jhiTranslate="hsadminNgApp.share.membership" for="field_membership">Membership</label>
                     <select class="form-control" id="field_membership" name="membership" [(ngModel)]="share.membershipId"  required>
                         <option *ngIf="!editForm.value.membership" [ngValue]="null" selected></option>
-                        <option [ngValue]="membershipOption.id" *ngFor="let membershipOption of memberships; trackBy: trackMembershipById">{{membershipOption.admissionDocumentDate}}</option>
+                        <option [ngValue]="membershipOption.id" *ngFor="let membershipOption of memberships; trackBy: trackMembershipById">{{membershipOption.displayLabel}}</option>
                     </select>
                 </div>
                 <div [hidden]="!(editForm.controls.membership?.dirty && editForm.controls.membership?.invalid)">
diff --git a/src/main/webapp/app/entities/share/share.component.html b/src/main/webapp/app/entities/share/share.component.html
index 7a7ba8e6..87d58b25 100644
--- a/src/main/webapp/app/entities/share/share.component.html
+++ b/src/main/webapp/app/entities/share/share.component.html
@@ -19,8 +19,7 @@
             <th jhiSortBy="valueDate"><span jhiTranslate="hsadminNgApp.share.valueDate">Value Date</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="action"><span jhiTranslate="hsadminNgApp.share.action">Action</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th jhiSortBy="quantity"><span jhiTranslate="hsadminNgApp.share.quantity">Quantity</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="remark"><span jhiTranslate="hsadminNgApp.share.remark">Remark</span> <fa-icon [icon]="'sort'"></fa-icon></th>
-            <th jhiSortBy="membershipDisplayReference"><span jhiTranslate="hsadminNgApp.share.membership">Membership</span> <fa-icon [icon]="'sort'"></fa-icon></th>
+            <th jhiSortBy="membershipDisplayLabel"><span jhiTranslate="hsadminNgApp.share.membership">Membership</span> <fa-icon [icon]="'sort'"></fa-icon></th>
             <th></th>
             </tr>
             </thead>
@@ -31,10 +30,9 @@
                 <td>{{share.valueDate | date:'mediumDate'}}</td>
                 <td jhiTranslate="{{'hsadminNgApp.ShareAction.' + share.action}}">{{share.action}}</td>
                 <td>{{share.quantity}}</td>
-                <td>{{share.remark}}</td>
                 <td>
                     <div *ngIf="share.membershipId">
-                        <a [routerLink]="['../membership', share.membershipId , 'view' ]" >{{share.membershipDisplayReference}}</a>
+                        <a [routerLink]="['../membership', share.membershipId , 'view' ]" >{{share.membershipDisplayLabel}}</a>
                     </div>
                 </td>
                 <td class="text-right">
diff --git a/src/main/webapp/app/shared/model/asset.model.ts b/src/main/webapp/app/shared/model/asset.model.ts
index caac8b37..f3beb759 100644
--- a/src/main/webapp/app/shared/model/asset.model.ts
+++ b/src/main/webapp/app/shared/model/asset.model.ts
@@ -16,8 +16,8 @@ export interface IAsset {
     action?: AssetAction;
     amount?: number;
     remark?: string;
-    membershipDisplayReference?: string;
     membershipId?: number;
+    membershipDisplayLabel?: string;
 }
 
 export class Asset implements IAsset {
@@ -28,7 +28,7 @@ export class Asset implements IAsset {
         public action?: AssetAction,
         public amount?: number,
         public remark?: string,
-        public membershipDisplayReference?: string,
-        public membershipId?: number
+        public membershipId?: number,
+        public membershipDisplayLabel?: string
     ) {}
 }
diff --git a/src/main/webapp/app/shared/model/customer.model.ts b/src/main/webapp/app/shared/model/customer.model.ts
index 884bbce9..95a2e895 100644
--- a/src/main/webapp/app/shared/model/customer.model.ts
+++ b/src/main/webapp/app/shared/model/customer.model.ts
@@ -32,6 +32,7 @@ export interface ICustomer {
     remark?: string;
     memberships?: IMembership[];
     sepamandates?: ISepaMandate[];
+    displayLabel?: string;
 }
 
 export class Customer implements ICustomer {
@@ -53,6 +54,7 @@ export class Customer implements ICustomer {
         public billingAddress?: string,
         public remark?: string,
         public memberships?: IMembership[],
-        public sepamandates?: ISepaMandate[]
+        public sepamandates?: ISepaMandate[],
+        public displayLabel?: string
     ) {}
 }
diff --git a/src/main/webapp/app/shared/model/membership.model.ts b/src/main/webapp/app/shared/model/membership.model.ts
index ffdca230..7d520a2f 100644
--- a/src/main/webapp/app/shared/model/membership.model.ts
+++ b/src/main/webapp/app/shared/model/membership.model.ts
@@ -13,7 +13,8 @@ export interface IMembership {
     assets?: IAsset[];
     customerPrefix?: string;
     customerId?: number;
-    membershipDisplayReference?: string;
+    membershipDisplayLabel?: string;
+    displayLabel?: string;
 }
 
 export class Membership implements IMembership {
@@ -28,6 +29,7 @@ export class Membership implements IMembership {
         public assets?: IAsset[],
         public customerPrefix?: string,
         public customerId?: number,
-        public membershipDisplayReference?: string
+        public displayLabel?: string,
+        public membershipDisplayLabel?: string
     ) {}
 }
diff --git a/src/main/webapp/app/shared/model/share.model.ts b/src/main/webapp/app/shared/model/share.model.ts
index eade53c3..af0a23b7 100644
--- a/src/main/webapp/app/shared/model/share.model.ts
+++ b/src/main/webapp/app/shared/model/share.model.ts
@@ -12,7 +12,7 @@ export interface IShare {
     action?: ShareAction;
     quantity?: number;
     remark?: string;
-    membershipDisplayReference?: string;
+    membershipDisplayLabel?: string;
     membershipId?: number;
 }
 
@@ -24,7 +24,7 @@ export class Share implements IShare {
         public action?: ShareAction,
         public quantity?: number,
         public remark?: string,
-        public membershipDisplayReference?: string,
+        public membershipDisplayLabel?: string,
         public membershipId?: number
     ) {}
 }
diff --git a/src/test/java/org/hostsharing/hsadminng/service/AssetServiceUnitTest.java b/src/test/java/org/hostsharing/hsadminng/service/AssetServiceUnitTest.java
new file mode 100644
index 00000000..02e59b4f
--- /dev/null
+++ b/src/test/java/org/hostsharing/hsadminng/service/AssetServiceUnitTest.java
@@ -0,0 +1,167 @@
+package org.hostsharing.hsadminng.service;
+
+import org.apache.commons.lang3.RandomUtils;
+import org.hostsharing.hsadminng.domain.Asset;
+import org.hostsharing.hsadminng.domain.enumeration.AssetAction;
+import org.hostsharing.hsadminng.repository.AssetRepository;
+import org.hostsharing.hsadminng.service.dto.AssetDTO;
+import org.hostsharing.hsadminng.service.mapper.AssetMapper;
+import org.hostsharing.hsadminng.web.rest.errors.BadRequestAlertException;
+import org.junit.Rule;
+import org.junit.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+
+import javax.persistence.EntityManager;
+import java.math.BigDecimal;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.catchThrowableOfType;
+import static org.mockito.ArgumentMatchers.same;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.*;
+
+
+// HINT: In IntelliJ IDEA such unit test classes can be created with Shift-Ctrl-T.
+// Do not forget to amend the class name (.e.g. ...UnitTest / ...IntTest)!
+public class AssetServiceUnitTest {
+
+    @Rule
+    public MockitoRule mockitoRule = MockitoJUnit.rule();
+
+    @Mock
+    private EntityManager em;
+
+    @Mock
+    private AssetRepository assetRepository;
+
+    @Mock
+    private AssetValidator assetValidator; // needed for @InjectMocks assetService
+
+    @Mock
+    private AssetMapper assetMapper;
+
+    @InjectMocks
+    private AssetService assetService;
+
+    // HINT: Click outside of any test method (e.g. here) and use Ctrl-Shift-F10
+    // to run all tests from this test class. Use Ctrl-F5 to run the last execution again;
+    // 'execution' here can also apply to running the application, whatever ran last.
+
+    // HINT: In IntelliJ IDEA such test methods can be created with Alt-Insert.
+    @Test
+    public void deleteIsRejectedForAssetTransactions() {
+        // when
+        final Throwable throwException = catchThrowableOfType(() -> assetService.delete(RandomUtils.nextLong()), BadRequestAlertException.class);
+
+        // then
+        // HINT: When using auto-import for assertions (e.g. via Alt-Enter in IntelliJ IDEA),
+        // beware to use the correct candidate from org.assertj.core.api.Assertions.
+        assertThat(throwException).isEqualToComparingFieldByField(
+            new BadRequestAlertException("Asset transactions are immutable", "asset", "assetTransactionImmutable"));
+    }
+
+    @Test
+    public void saveShouldPersistValidTransactions() {
+        // given
+        final AssetDTO givenAssetDTO = givenAssetDTO(null, AssetAction.PAYMENT, anyPositiveAmout());
+        // HINT: given(...)...will...() can't be used for void methods, in that case use Mockito's do...() methods
+        doNothing().when(assetValidator).validate(givenAssetDTO);
+
+        // when
+        final AssetDTO returnedAssetDto = assetService.save(givenAssetDTO);
+
+        // then
+        verify(em).flush();
+        verify(em).refresh(any(Asset.class));
+        assertThat(returnedAssetDto).isEqualToIgnoringGivenFields(givenAssetDTO, "id");
+    }
+
+    @Test
+    public void saveShouldNotPersistInvalidTransactions() {
+        // given
+        final AssetDTO givenAssetDTO = givenAssetDTO(null, AssetAction.PAYMENT, anyNegativeAmount());
+        doThrow(new BadRequestAlertException("Some Dummy Test Violation", "asset", "assetInvalidTestDummy")).when(assetValidator).validate(givenAssetDTO);
+
+        // when
+        final Throwable throwException = catchThrowableOfType(() -> assetService.save(givenAssetDTO), BadRequestAlertException.class);
+
+        // then
+        assertThat(throwException).isEqualToComparingFieldByField(
+            new BadRequestAlertException("Some Dummy Test Violation", "asset", "assetInvalidTestDummy"));
+    }
+
+    @Test
+    public void saveShouldUpdateValidTransactions() {
+        // given
+        final AssetDTO givenAssetDTO = givenAssetDTO(anyNonNullId(), AssetAction.PAYMENT, anyPositiveAmout());
+        doNothing().when(assetValidator).validate(givenAssetDTO);
+
+        // when
+        final AssetDTO returnedAssetDto = assetService.save(givenAssetDTO);
+
+        // then
+        verify(em).flush();
+        verify(em).refresh(any(Asset.class));
+        assertThat(returnedAssetDto).isEqualToIgnoringGivenFields(givenAssetDTO, "id");
+    }
+
+    @Test
+    public void saveShouldNotUpdateInvalidTransactions() {
+        // given
+        final AssetDTO givenAssetDTO = givenAssetDTO(anyNonNullId(), AssetAction.PAYMENT, anyNegativeAmount());
+        // HINT: given(...) can't be used for void methods, in that case use Mockito's do...() methods
+        doThrow(new BadRequestAlertException("Some Dummy Test Violation", "asset", "assetInvalidTestDummy")).when(assetValidator).validate(givenAssetDTO);
+
+        // when
+        final Throwable throwException = catchThrowableOfType(() -> assetService.save(givenAssetDTO), BadRequestAlertException.class);
+
+        // then
+        assertThat(throwException).isEqualToComparingFieldByField(
+            new BadRequestAlertException("Some Dummy Test Violation", "asset", "assetInvalidTestDummy"));
+    }
+
+    // --- only test fixture code below ---
+
+    private long anyNonNullId() {
+        return RandomUtils.nextInt();
+    }
+
+    // HINT: This rather complicated setup indicates that the method AssetService::save breaks the single responsibility principle.
+    private AssetDTO givenAssetDTO(final Long id, final AssetAction givenAction, final BigDecimal givenQuantity) {
+        final AssetDTO givenAssetDTO = createAssetDTO(id, givenAction, givenQuantity);
+
+        // dto -> entity
+        final Asset givenAssetEntity = Mockito.mock(Asset.class);
+        given(assetMapper.toEntity(same(givenAssetDTO))).willReturn(givenAssetEntity);
+
+        // assetRepository.save(entity);
+        final Asset persistedAssetEntity = Mockito.mock(Asset.class);
+        given(assetRepository.save(same(givenAssetEntity))).willReturn(persistedAssetEntity);
+
+        // entity -> dto
+        AssetDTO persistedAssetDTO = createAssetDTO(id == null ? RandomUtils.nextLong() : id, givenAction, givenQuantity);
+        given(assetMapper.toDto(same(persistedAssetEntity))).willReturn(persistedAssetDTO);
+
+        return givenAssetDTO;
+    }
+
+    private AssetDTO createAssetDTO(Long id, AssetAction givenAction, BigDecimal givenAmount) {
+        final AssetDTO givenAssetDTO = new AssetDTO();
+        givenAssetDTO.setId(id);
+        givenAssetDTO.setAction(givenAction);
+        givenAssetDTO.setAmount(givenAmount);
+        return givenAssetDTO;
+    }
+
+    private BigDecimal anyPositiveAmout() {
+        return BigDecimal.valueOf(RandomUtils.nextInt()).add(new BigDecimal("0.1"));
+    }
+
+    private BigDecimal anyNegativeAmount() {
+        return anyPositiveAmout().negate();
+    }
+}
diff --git a/src/test/java/org/hostsharing/hsadminng/service/ShareServiceUnitTest.java b/src/test/java/org/hostsharing/hsadminng/service/ShareServiceUnitTest.java
index 5dacddfb..34150e4c 100644
--- a/src/test/java/org/hostsharing/hsadminng/service/ShareServiceUnitTest.java
+++ b/src/test/java/org/hostsharing/hsadminng/service/ShareServiceUnitTest.java
@@ -15,12 +15,13 @@ import org.mockito.Mockito;
 import org.mockito.junit.MockitoJUnit;
 import org.mockito.junit.MockitoRule;
 
+import javax.persistence.EntityManager;
+
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.catchThrowableOfType;
 import static org.mockito.ArgumentMatchers.same;
 import static org.mockito.BDDMockito.given;
-import static org.mockito.Mockito.doNothing;
-import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.*;
 
 
 // HINT: In IntelliJ IDEA such unit test classes can be created with Shift-Ctrl-T.
@@ -30,6 +31,9 @@ public class ShareServiceUnitTest {
     @Rule
     public MockitoRule mockitoRule = MockitoJUnit.rule();
 
+    @Mock
+    private EntityManager em;
+
     @Mock
     private ShareRepository shareRepository;
 
@@ -70,6 +74,8 @@ public class ShareServiceUnitTest {
         final ShareDTO returnedShareDto = shareService.save(givenShareDTO);
 
         // then
+        verify(em).flush();
+        verify(em).refresh(any(Share.class));
         assertThat(returnedShareDto).isEqualToIgnoringGivenFields(givenShareDTO, "id");
     }
 
@@ -97,6 +103,8 @@ public class ShareServiceUnitTest {
         final ShareDTO returnedShareDto = shareService.save(givenShareDTO);
 
         // then
+        verify(em).flush();
+        verify(em).refresh(any(Share.class));
         assertThat(returnedShareDto).isEqualToIgnoringGivenFields(givenShareDTO, "id");
     }
 
diff --git a/src/test/java/org/hostsharing/hsadminng/service/dto/CustomerDTOUnitTest.java b/src/test/java/org/hostsharing/hsadminng/service/dto/CustomerDTOUnitTest.java
index 5d25cfea..e60ef40a 100644
--- a/src/test/java/org/hostsharing/hsadminng/service/dto/CustomerDTOUnitTest.java
+++ b/src/test/java/org/hostsharing/hsadminng/service/dto/CustomerDTOUnitTest.java
@@ -82,7 +82,8 @@ public class CustomerDTOUnitTest {
             toJSonFieldDefinition("id", given.getId()) + "," +
             toJSonFieldDefinition("reference", given.getReference()) + "," +
             toJSonFieldDefinition("prefix", given.getPrefix()) + "," +
-            toJSonFieldDefinition("name", given.getName()) +
+            toJSonFieldDefinition("name", given.getName()) + "," +
+            toJSonFieldDefinition("displayLabel", given.getDisplayLabel()) +
             "}";
         assertEquals(expectedJSon, actual);
     }
@@ -118,7 +119,7 @@ public class CustomerDTOUnitTest {
         expected.setId(1234L);
         expected.setContractualSalutation("Hallo Updated");
         expected.setBillingSalutation("Moin Updated");
-        assertThat(actual).isEqualToComparingFieldByField(expected);
+        assertThat(actual).isEqualToIgnoringGivenFields(expected, "displayLabel");
     }
 
     // --- only test fixture below ---
@@ -140,12 +141,11 @@ public class CustomerDTOUnitTest {
                 toJSonFieldDefinitionIfPresent("contractualAddress", dto.getContractualAddress()) +
                 toJSonFieldDefinitionIfPresent("billingSalutation", dto.getBillingSalutation()) +
                 toJSonFieldDefinitionIfPresent("billingAddress", dto.getBillingAddress()) +
-                toJSonFieldDefinitionIfPresent("remark", dto.getRemark());
+                toJSonFieldDefinitionIfPresent("remark", dto.getRemark()) +
+                toJSonFieldDefinitionIfPresent("displayLabel", dto.getDisplayLabel());
         return "{" + json.substring(0, json.length() - 1) + "}";
     }
 
-
-
     private String toJSonFieldDefinition(String name, String value) {
         return inQuotes(name) + ":" + (value != null ? inQuotes(value) : "null");
     }
@@ -186,6 +186,7 @@ public class CustomerDTOUnitTest {
         given.setBillingAddress("Noch eine Adresse");
         given.setBillingSalutation("Moin");
         given.setRemark("Eine Bemerkung");
+        given.setDisplayLabel("Display Label");
         return given;
     }
 }
diff --git a/src/test/java/org/hostsharing/hsadminng/service/dto/ShareDTOUnitTest.java b/src/test/java/org/hostsharing/hsadminng/service/dto/ShareDTOUnitTest.java
index 3713d616..9cc5cc0d 100644
--- a/src/test/java/org/hostsharing/hsadminng/service/dto/ShareDTOUnitTest.java
+++ b/src/test/java/org/hostsharing/hsadminng/service/dto/ShareDTOUnitTest.java
@@ -154,7 +154,7 @@ public class ShareDTOUnitTest {
         givenDTO.setAction(ShareAction.SUBSCRIPTION);
         givenDTO.setQuantity(3);
         givenDTO.setDocumentDate(LocalDate.parse("2019-04-22"));
-        givenDTO.setMembershipDisplayReference("2019-04-21"); // TODO: why is this not a LocalDate?
+        givenDTO.setMembershipDisplayLabel("2019-04-21"); // TODO: why is this not a LocalDate?
         givenDTO.setValueDate(LocalDate.parse("2019-04-30"));
         givenDTO.setRemark("Some Remark");
         return givenDTO;
diff --git a/src/test/java/org/hostsharing/hsadminng/web/rest/MembershipResourceIntTest.java b/src/test/java/org/hostsharing/hsadminng/web/rest/MembershipResourceIntTest.java
index f40652e2..ce53d732 100644
--- a/src/test/java/org/hostsharing/hsadminng/web/rest/MembershipResourceIntTest.java
+++ b/src/test/java/org/hostsharing/hsadminng/web/rest/MembershipResourceIntTest.java
@@ -253,7 +253,7 @@ public class MembershipResourceIntTest {
             .andExpect(jsonPath("$.[*].cancellationDocumentDate").value(hasItem(DEFAULT_CANCELLATION_DOCUMENT_DATE.toString())))
             .andExpect(jsonPath("$.[*].memberFromDate").value(hasItem(DEFAULT_MEMBER_FROM_DATE.toString())))
             .andExpect(jsonPath("$.[*].memberUntilDate").value(hasItem(DEFAULT_MEMBER_UNTIL_DATE.toString())))
-            .andExpect(jsonPath("$.[*].remark").value(hasItem(DEFAULT_REMARK.toString())));
+            .andExpect(jsonPath("$.[*].remark").value(hasItem(DEFAULT_REMARK)));
     }
 
     @Test
@@ -271,7 +271,7 @@ public class MembershipResourceIntTest {
             .andExpect(jsonPath("$.cancellationDocumentDate").value(DEFAULT_CANCELLATION_DOCUMENT_DATE.toString()))
             .andExpect(jsonPath("$.memberFromDate").value(DEFAULT_MEMBER_FROM_DATE.toString()))
             .andExpect(jsonPath("$.memberUntilDate").value(DEFAULT_MEMBER_UNTIL_DATE.toString()))
-            .andExpect(jsonPath("$.remark").value(DEFAULT_REMARK.toString()));
+            .andExpect(jsonPath("$.remark").value(DEFAULT_REMARK));
     }
 
     @Test