diff --git a/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationController.java b/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationController.java
index 0ebb0c9b..9910f4b7 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationController.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationController.java
@@ -45,35 +45,31 @@ public class HsOfficeRelationController implements HsOfficeRelationsApi {
     @Override
     @Transactional(readOnly = true)
     public ResponseEntity<List<HsOfficeRelationResource>> listRelations(
-            final String currentSubject,
-            final String assumedRoles,
-            final UUID personUuid,
-            final HsOfficeRelationTypeResource relationType,
-            final String personData,
-            final String contactData) {
+        final String currentSubject,
+        final String assumedRoles,
+        final UUID personUuid,
+        final HsOfficeRelationTypeResource relationType,
+        final String personData,
+        final String contactData) {
         context.define(currentSubject, assumedRoles);
 
         final List<HsOfficeRelationRbacEntity> entities =
-            ( personData == null && contactData == null )
-                    ? relationRbacRepo.findRelationRelatedToPersonUuidRelationTypePersonAndContactData(personUuid,
-                        relationType == null ? null : HsOfficeRelationType.valueOf(relationType.name()),
-                        personData, contactData)
-                    : relationRbacRepo.findRelationRelatedToPersonUuidRelationTypePersonAndContactData(
-                            personUuid,
-                            relationType == null ? null : HsOfficeRelationType.valueOf(relationType.name()),
-                            forLike(personData), forLike(contactData));
+            relationRbacRepo.findRelationRelatedToPersonUuidRelationTypePersonAndContactData(
+                personUuid,
+                relationType == null ? null : HsOfficeRelationType.valueOf(relationType.name()),
+                personData, contactData);
 
         final var resources = mapper.mapList(entities, HsOfficeRelationResource.class,
-                RELATION_ENTITY_TO_RESOURCE_POSTMAPPER);
+            RELATION_ENTITY_TO_RESOURCE_POSTMAPPER);
         return ResponseEntity.ok(resources);
     }
 
     @Override
     @Transactional
     public ResponseEntity<HsOfficeRelationResource> addRelation(
-            final String currentSubject,
-            final String assumedRoles,
-            final HsOfficeRelationInsertResource body) {
+        final String currentSubject,
+        final String assumedRoles,
+        final HsOfficeRelationInsertResource body) {
 
         context.define(currentSubject, assumedRoles);
 
@@ -81,33 +77,33 @@ public class HsOfficeRelationController implements HsOfficeRelationsApi {
         entityToSave.setType(HsOfficeRelationType.valueOf(body.getType()));
         entityToSave.setMark(body.getMark());
         entityToSave.setAnchor(holderRepo.findByUuid(body.getAnchorUuid()).orElseThrow(
-                () -> new NoSuchElementException("cannot find Person by anchorUuid: " + body.getAnchorUuid())
+            () -> new NoSuchElementException("cannot find Person by anchorUuid: " + body.getAnchorUuid())
         ));
         entityToSave.setHolder(holderRepo.findByUuid(body.getHolderUuid()).orElseThrow(
-                () -> new NoSuchElementException("cannot find Person by holderUuid: " + body.getHolderUuid())
+            () -> new NoSuchElementException("cannot find Person by holderUuid: " + body.getHolderUuid())
         ));
         entityToSave.setContact(realContactRepo.findByUuid(body.getContactUuid()).orElseThrow(
-                () -> new NoSuchElementException("cannot find Contact by contactUuid: " + body.getContactUuid())
+            () -> new NoSuchElementException("cannot find Contact by contactUuid: " + body.getContactUuid())
         ));
 
         final var saved = relationRbacRepo.save(entityToSave);
 
         final var uri =
-                MvcUriComponentsBuilder.fromController(getClass())
-                        .path("/api/hs/office/relations/{id}")
-                        .buildAndExpand(saved.getUuid())
-                        .toUri();
+            MvcUriComponentsBuilder.fromController(getClass())
+                .path("/api/hs/office/relations/{id}")
+                .buildAndExpand(saved.getUuid())
+                .toUri();
         final var mapped = mapper.map(saved, HsOfficeRelationResource.class,
-                RELATION_ENTITY_TO_RESOURCE_POSTMAPPER);
+            RELATION_ENTITY_TO_RESOURCE_POSTMAPPER);
         return ResponseEntity.created(uri).body(mapped);
     }
 
     @Override
     @Transactional(readOnly = true)
     public ResponseEntity<HsOfficeRelationResource> getRelationByUuid(
-            final String currentSubject,
-            final String assumedRoles,
-            final UUID relationUuid) {
+        final String currentSubject,
+        final String assumedRoles,
+        final UUID relationUuid) {
 
         context.define(currentSubject, assumedRoles);
 
@@ -121,9 +117,9 @@ public class HsOfficeRelationController implements HsOfficeRelationsApi {
     @Override
     @Transactional
     public ResponseEntity<Void> deleteRelationByUuid(
-            final String currentSubject,
-            final String assumedRoles,
-            final UUID relationUuid) {
+        final String currentSubject,
+        final String assumedRoles,
+        final UUID relationUuid) {
         context.define(currentSubject, assumedRoles);
 
         final var result = relationRbacRepo.deleteByUuid(relationUuid);
@@ -137,10 +133,10 @@ public class HsOfficeRelationController implements HsOfficeRelationsApi {
     @Override
     @Transactional
     public ResponseEntity<HsOfficeRelationResource> patchRelation(
-            final String currentSubject,
-            final String assumedRoles,
-            final UUID relationUuid,
-            final HsOfficeRelationPatchResource body) {
+        final String currentSubject,
+        final String assumedRoles,
+        final UUID relationUuid,
+        final HsOfficeRelationPatchResource body) {
 
         context.define(currentSubject, assumedRoles);
 
diff --git a/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRbacRepository.java b/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRbacRepository.java
index 69771dcd..96d4b8d5 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRbacRepository.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRbacRepository.java
@@ -28,10 +28,10 @@ public interface HsOfficeRelationRbacRepository extends Repository<HsOfficeRelat
      * @return a list of (accessible) relations which match all given criteria
      */
     default List<HsOfficeRelationRbacEntity> findRelationRelatedToPersonUuidRelationTypePersonAndContactData(
-            UUID personUuid,
-            HsOfficeRelationType relationType,
-            String personData,
-            String contactData) {
+            final UUID personUuid,
+            final HsOfficeRelationType relationType,
+            final String personData,
+            final String contactData) {
         return findRelationRelatedToPersonUuidRelationTypePersonAndContactDataImpl(
                 personUuid, toStringOrNull(relationType), toSqlLikeOperand(personData), toSqlLikeOperand(contactData));
     }
@@ -57,36 +57,6 @@ public interface HsOfficeRelationRbacRepository extends Repository<HsOfficeRelat
             final String personData,
             final String contactData);
 
-    /**
-     * Finds relations by a conjunction of optional criteria, including anchorPerson, holderPerson and contact data.
-     *
-     * @param personUuid the optional UUID of the anchorPerson or holderPerson
-     * @param relationType the type of the relation
-     * @param personData a lower-case string to match the persons tradeName, familyName or givenName (use '%' for wildcard)
-     * @param contactData a lower-case string to match the contacts caption, postalAddress, emailAddresses or phoneNumbers (use '%' for wildcard)
-     * @return a list of (accessible) relations which match all given criteria
-     */
-    @Query(value = """
-            SELECT rel FROM HsOfficeRelationRbacEntity AS rel
-                WHERE (:relationType IS NULL OR CAST(rel.type AS String) = CAST(:relationType AS String))
-                    AND ( :personUuid IS NULL OR
-                            rel.anchor.uuid = :personUuid OR rel.holder.uuid = :personUuid )
-                    AND ( :personData IS NULL OR
-                            lower(rel.anchor.tradeName) LIKE :personData OR lower(rel.holder.tradeName) LIKE :personData OR
-                            lower(rel.anchor.familyName) LIKE :personData OR lower(rel.holder.familyName) LIKE :personData OR
-                            lower(rel.anchor.givenName) LIKE :personData OR lower(rel.holder.givenName) LIKE :personData )
-                    AND ( :contactData IS NULL OR
-                            lower(rel.contact.caption) LIKE :contactData OR
-                            lower(rel.contact.postalAddress) LIKE :contactData OR
-                            lower(CAST(rel.contact.emailAddresses AS String)) LIKE :contactData OR
-                            lower(CAST(rel.contact.phoneNumbers AS String)) LIKE :contactData )
-            """)
-    List<HsOfficeRelationRbacEntity> findRelationRelatedToPersonUuidRelationTypePersonAndContactData(
-            UUID personUuid,
-            HsOfficeRelationType relationType,
-            String personData,
-            String contactData);
-
     HsOfficeRelationRbacEntity save(final HsOfficeRelationRbacEntity entity);
 
     long count();