@@ -59,2 +64,3 @@
 
-        final var saved = bookingItemRepo.save(valid(entityToSave));
+        final HsBookingItemEntity entityToSave1 = bookingItemRepo.save(entityToSave);
+        final var saved = HsBookingItemEntityValidatorRegistry.validated(entityToSave1);

@@ -78,6 +84,7 @@ public class HsBookingItemController implements HsBookingItemsApi {
         context.define(currentUser, assumedRoles);
 
         final var result = bookingItemRepo.findByUuid(bookingItemUuid);
+        result.ifPresent(entity -> em.detach(entity));

@@ -0,0 +23,4 @@
+        return sequentiallyValidate(
+                () -> enrich(prefix(bookingItem.toShortString(), "resources"), validateProperties(bookingItem.getResources())),
+                () -> enrich(prefix(bookingItem.toShortString(), "parentItem"), optionallyValidate(bookingItem.getParentItem())),
+                () -> validateAgainstSubEntities(bookingItem)

@@ -64,2 +63,3 @@
 
-        final var saved = assetRepo.save(valid(entityToSave));
+        final HsHostingAssetEntity persistentEntity = assetRepo.save(entityToSave);
+        final var saved = HsHostingAssetEntityValidatorRegistry.validated(persistentEntity);

@@ -119,2 +119,3 @@
 
-        final var saved = assetRepo.save(valid(current));
+        final HsHostingAssetEntity persistentEntity = assetRepo.save(current);
+        final var saved = HsHostingAssetEntityValidatorRegistry.validated(persistentEntity);

@@ -0,0 +38,4 @@
+        // then
+        assertThat(result).isInstanceOf(ValidationException.class)
+                .hasMessageContaining(
+                        "D-12345:test project:Test-Server.resources.CPUs' is required but missing",