diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/persist/ReferencePersist.java b/dmp-backend/core/src/main/java/eu/eudat/model/persist/ReferencePersist.java
index f4cb7d973..fa81ef4aa 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/persist/ReferencePersist.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/persist/ReferencePersist.java
@@ -201,10 +201,7 @@ public class ReferencePersist {
                             .must(() -> !this.isNull(item.getSourceType()))
                             .failOn(ReferencePersist._sourceType).failWith(messageSource.getMessage("Validation_Required", new Object[]{ReferencePersist._sourceType}, LocaleContextHolder.getLocale())),
 
-                    this.spec()
-                            .must(() -> !this.isNull(item.getDefinition()))
-                            .failOn(ReferencePersist._definition).failWith(messageSource.getMessage("Validation_Required", new Object[]{ReferencePersist._definition}, LocaleContextHolder.getLocale())),
-                    this.refSpec()
+                   this.refSpec()
                             .iff(() -> !this.isNull(item.getDefinition()))
                             .on(ReferencePersist._definition)
                             .over(item.getDefinition())
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/persist/dmpproperties/DmpBlueprintValuePersist.java b/dmp-backend/core/src/main/java/eu/eudat/model/persist/dmpproperties/DmpBlueprintValuePersist.java
index 89b8e043d..734dcd426 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/persist/dmpproperties/DmpBlueprintValuePersist.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/persist/dmpproperties/DmpBlueprintValuePersist.java
@@ -1,6 +1,7 @@
 package eu.eudat.model.persist.dmpproperties;
 
 import eu.eudat.commons.validation.BaseValidator;
+import gr.cite.tools.validation.ValidatorFactory;
 import gr.cite.tools.validation.specification.Specification;
 import eu.eudat.convention.ConventionService;
 import eu.eudat.errorcode.ErrorThesaurusProperties;
@@ -53,12 +54,14 @@ public class DmpBlueprintValuePersist {
     @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
     public static class DmpBlueprintValuePersistValidator extends BaseValidator<DmpBlueprintValuePersist> {
 
+        private final ValidatorFactory validatorFactory;
         private final MessageSource messageSource;
 
         public static final String ValidatorName = "DmpBlueprintValuePersistValidator";
 
-        protected DmpBlueprintValuePersistValidator(ConventionService conventionService, ErrorThesaurusProperties errors, MessageSource messageSource) {
+        protected DmpBlueprintValuePersistValidator(ConventionService conventionService, ErrorThesaurusProperties errors, ValidatorFactory validatorFactory, MessageSource messageSource) {
             super(conventionService, errors);
+            this.validatorFactory = validatorFactory;
 	        this.messageSource = messageSource;
         }
 
@@ -70,17 +73,18 @@ public class DmpBlueprintValuePersist {
         @Override
         protected List<Specification> specifications(DmpBlueprintValuePersist item) {
             return Arrays.asList(
-            this.spec()
-                    .must(() -> !this.isValidGuid(item.getFieldId()))
-                    .failOn(DmpBlueprintValuePersist._fieldId).failWith(messageSource.getMessage("Validation_Required", new Object[]{DmpBlueprintValuePersist._fieldId}, LocaleContextHolder.getLocale())),
-            this.spec()
-                    .iff(() -> this.isNull(item.getReferences()) || item.getReferences().isEmpty())
-                    .must(() -> !this.isEmpty(item.getFieldValue()))
-                    .failOn(DmpBlueprintValuePersist._fieldValue).failWith(messageSource.getMessage("Validation_Required", new Object[]{DmpBlueprintValuePersist._fieldValue}, LocaleContextHolder.getLocale())),
-            this.spec()
-                    .iff(() -> !this.isNull(item.getReferences()) && !item.getReferences().isEmpty())
-                    .must(() -> this.isEmpty(item.getFieldValue()))
-                    .failOn(DmpBlueprintValuePersist._fieldValue).failWith(messageSource.getMessage("Validation_UnexpectedValue", new Object[]{DmpBlueprintValuePersist._fieldValue}, LocaleContextHolder.getLocale()))
+//            this.spec()
+//                    .must(() -> !this.isValidGuid(item.getFieldId()))
+//                    .failOn(DmpBlueprintValuePersist._fieldId).failWith(messageSource.getMessage("Validation_Required", new Object[]{DmpBlueprintValuePersist._fieldId}, LocaleContextHolder.getLocale())),
+//            this.spec()
+//                    .iff(() -> this.isNull(item.getReferences()) || item.getReferences().isEmpty())
+//                    .must(() -> !this.isEmpty(item.getFieldValue()))
+//                    .failOn(DmpBlueprintValuePersist._fieldValue).failWith(messageSource.getMessage("Validation_Required", new Object[]{DmpBlueprintValuePersist._fieldValue}, LocaleContextHolder.getLocale())),
+           this.navSpec()
+                    .iff(() -> !this.isListNullOrEmpty(item.getReferences()))
+                    .on(DmpBlueprintValuePersist._references)
+                    .over(item.getReferences())
+                    .using((itm) -> this.validatorFactory.validator(ReferencePersist.ReferencePersistValidator.class))
             );
         }
     }
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/persist/referencedefinition/FieldPersist.java b/dmp-backend/core/src/main/java/eu/eudat/model/persist/referencedefinition/FieldPersist.java
index 95ceaaefc..e4536f3b2 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/persist/referencedefinition/FieldPersist.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/persist/referencedefinition/FieldPersist.java
@@ -79,10 +79,7 @@ public class FieldPersist {
 							.failOn(FieldPersist._code).failWith(messageSource.getMessage("Validation_Required", new Object[]{FieldPersist._code}, LocaleContextHolder.getLocale())),
 					this.spec()
 							.must(() -> !this.isNull(item.getDataType()))
-							.failOn(FieldPersist._dataType).failWith(messageSource.getMessage("Validation_Required", new Object[]{FieldPersist._dataType}, LocaleContextHolder.getLocale())),
-					this.spec()
-							.must(() -> !this.isEmpty(item.getValue()))
-							.failOn(FieldPersist._value).failWith(messageSource.getMessage("Validation_Required", new Object[]{FieldPersist._value}, LocaleContextHolder.getLocale()))
+							.failOn(FieldPersist._dataType).failWith(messageSource.getMessage("Validation_Required", new Object[]{FieldPersist._dataType}, LocaleContextHolder.getLocale()))
 			);
 		}
 	}
diff --git a/dmp-frontend/src/app/core/services/reference/reference.service.ts b/dmp-frontend/src/app/core/services/reference/reference.service.ts
index 6999bf189..8f1012b9a 100644
--- a/dmp-frontend/src/app/core/services/reference/reference.service.ts
+++ b/dmp-frontend/src/app/core/services/reference/reference.service.ts
@@ -148,6 +148,7 @@ export class ReferenceService {
 		lookup.project = {
 			fields: [
 				nameof<Reference>(x => x.id),
+				nameof<Reference>(x => x.hash),
 				nameof<Reference>(x => x.label),
 				nameof<Reference>(x => x.type),
 				nameof<Reference>(x => x.description),
diff --git a/dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.component.html b/dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.component.html
index ca2aefe83..c34847d02 100644
--- a/dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.component.html
+++ b/dmp-frontend/src/app/ui/dmp/dmp-editor-blueprint/dmp-editor.component.html
@@ -179,13 +179,6 @@
 															</mat-form-field>
 														</div>
 														<div *ngIf="field.systemFieldType == dmpBlueprintSystemFieldTypeEnum.CONTACT">
-															<div class="row">
-																<div class="col">
-																	<button mat-icon-button (click)="addContact()" [disabled]="formGroup.disabled">
-																		<mat-icon>add</mat-icon>
-																	</button>
-																</div>
-															</div>
 															<div cdkDropList class="col-12" (cdkDropListDropped)="dropContacts($event)">
 																<div *ngFor="let contact of formGroup.get('properties').get('contacts').controls; let contactIndex=index;" cdkDrag class="row align-items-center" [cdkDragDisabled]="formGroup.disabled">
 																	<div class="col-auto">
@@ -193,53 +186,66 @@
 																	</div>
 																	<div class="col-auto d-flex"><mat-icon [ngClass]="{'drag-handle-disabled': formGroup.disabled}" cdkDragHandle class="drag-handle">drag_indicator</mat-icon></div>
 																	<div class="col-auto">
-																		<mat-button-toggle-group name="fontStyle" aria-label="Font Style" [formControl]= "contact.get('contactType')">
+																		<mat-button-toggle-group name="fontStyle" aria-label="Font Style" [formControl]="contact.get('contactType')">
 																			<div *ngFor="let contactType of dmpContactTypeEnumValues">
 																				<mat-button-toggle class="lang-button" [value]="contactType">{{enumUtils.toDmpContactTypeString(contactType)}}</mat-button-toggle>
 																			</div>
 																		</mat-button-toggle-group>
 																	</div>
-																	<div class="col-auto d-flex" *ngIf="contact.get('contactType').value == dmpContactTypeEnum.Internal">
-																		<mat-form-field class="w-100">
-																			<mat-label>{{'DMP-EDITOR.FIELDS1.USER' | translate}}</mat-label>
-																			<app-single-auto-complete [formControl]="contact.get('userId')" [hidePlaceholder]="true" [configuration]= "userService.singleAutocompleteConfiguration"></app-single-auto-complete>
-																			<mat-error *ngIf="contact.get('userId').hasError('backendError')">{{contact.get('userId').getError('backendError').message}}</mat-error>
-																			<mat-error *ngIf="contact.get('userId').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
-																		</mat-form-field>
-																	</div>
-																	<div class="col-auto d-flex" *ngIf="contact.get('contactType').value == dmpContactTypeEnum.External">
-																		<div class="col">
-																			<mat-form-field class="w-100">
-																				<mat-label>{{'DMP-EDITOR.FIELDS1.FIRST-NAME' | translate}}</mat-label>
-																				<input matInput type="text" name="firstName" [formControl]="contact.get('firstName')">
-																				<mat-error *ngIf="contact.get('firstName').hasError('backendError')">{{contact.get('firstName').getError('backendError').message}}</mat-error>
-																				<mat-error *ngIf="contact.get('firstName').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
-																			</mat-form-field>
-																		</div>
-																		<div class="col">
-																			<mat-form-field class="w-100">
-																				<mat-label>{{'DMP-EDITOR.FIELDS1.LAST-NAME' | translate}}</mat-label>
-																				<input matInput type="text" name="lastName" [formControl]="contact.get('lastName')">
-																				<mat-error *ngIf="contact.get('lastName').hasError('backendError')">{{contact.get('lastName').getError('backendError').message}}</mat-error>
-																				<mat-error *ngIf="contact.get('lastName').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
-																			</mat-form-field>
-																		</div>
-																		<div class="col">
-																			<mat-form-field class="w-100">
-																				<mat-label>{{'DMP-EDITOR.FIELDS1.EMAIL' | translate}}</mat-label>
-																				<input matInput type="text" name="email" [formControl]="contact.get('email')">
-																				<mat-error *ngIf="contact.get('email').hasError('backendError')">{{contact.get('email').getError('backendError').message}}</mat-error>
-																				<mat-error *ngIf="contact.get('email').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
-																			</mat-form-field>
+																	<div class="col pt-4">
+																		<div class="row">
+																			<div class="col d-flex" *ngIf="contact.get('contactType').value == dmpContactTypeEnum.Internal">
+																				<mat-form-field class="w-100">
+																					<mat-label>{{'DMP-EDITOR.FIELDS1.USER' | translate}}</mat-label>
+																					<app-single-auto-complete [formControl]="contact.get('userId')" [hidePlaceholder]="true" [configuration]="userService.singleAutocompleteConfiguration"></app-single-auto-complete>
+																					<mat-error *ngIf="contact.get('userId').hasError('backendError')">{{contact.get('userId').getError('backendError').message}}</mat-error>
+																					<mat-error *ngIf="contact.get('userId').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+																				</mat-form-field>
+																			</div>
+																			<ng-container *ngIf="contact.get('contactType').value == dmpContactTypeEnum.External">
+																				<div class="col">
+																					<mat-form-field class="w-100">
+																						<mat-label>{{'DMP-EDITOR.FIELDS1.FIRST-NAME' | translate}}</mat-label>
+																						<input matInput type="text" name="firstName" [formControl]="contact.get('firstName')">
+																						<mat-error *ngIf="contact.get('firstName').hasError('backendError')">{{contact.get('firstName').getError('backendError').message}}</mat-error>
+																						<mat-error *ngIf="contact.get('firstName').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+																					</mat-form-field>
+																				</div>
+																				<div class="col">
+																					<mat-form-field class="w-100">
+																						<mat-label>{{'DMP-EDITOR.FIELDS1.LAST-NAME' | translate}}</mat-label>
+																						<input matInput type="text" name="lastName" [formControl]="contact.get('lastName')">
+																						<mat-error *ngIf="contact.get('lastName').hasError('backendError')">{{contact.get('lastName').getError('backendError').message}}</mat-error>
+																						<mat-error *ngIf="contact.get('lastName').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+																					</mat-form-field>
+																				</div>
+																				<div class="col">
+																					<mat-form-field class="w-100">
+																						<mat-label>{{'DMP-EDITOR.FIELDS1.EMAIL' | translate}}</mat-label>
+																						<input matInput type="text" name="email" [formControl]="contact.get('email')">
+																						<mat-error *ngIf="contact.get('email').hasError('backendError')">{{contact.get('email').getError('backendError').message}}</mat-error>
+																						<mat-error *ngIf="contact.get('email').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+																					</mat-form-field>
+																				</div>
+																			</ng-container>
 																		</div>
 																	</div>
-																	<button mat-icon-button class="action-list-icon" matTooltip="{{'DMP-EDITOR.FIELDS.REMOVE-CONTACT' | translate}}" (click)="removeContact(contactIndex)" [disabled]="formGroup.disabled">
-																		<mat-icon>delete</mat-icon>
-																	</button>													
+																	<div class="col-auto">
+																		<button mat-icon-button class="action-list-icon" matTooltip="{{'DMP-EDITOR.FIELDS.REMOVE-CONTACT' | translate}}" (click)="removeContact(contactIndex)" [disabled]="formGroup.disabled">
+																			<mat-icon>delete</mat-icon>
+																		</button>
+																	</div>
 																</div>
 																<mat-error *ngIf="formGroup.get('properties').get('contacts').hasError('backendError')">{{formGroup.get('properties').get('contacts').getError('backendError').message}}</mat-error>
 																<mat-error *ngIf="formGroup.get('properties').get('contacts').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
 															</div>
+															<div class="row">
+																<div class="col">
+																	<button mat-icon-button (click)="addContact()" [disabled]="formGroup.disabled">
+																		<mat-icon>add</mat-icon>
+																	</button>
+																</div>
+															</div>
 														</div>
 														<div *ngIf="field.systemFieldType == dmpBlueprintSystemFieldTypeEnum.ACCESS_RIGHTS">
 															<mat-form-field class="w-100">
@@ -252,55 +258,56 @@
 																<mat-error *ngIf="formGroup.get('accessType').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
 															</mat-form-field>
 														</div>
-													<div *ngIf="field.category === dmpBlueprintSectionFieldCategoryEnum.EXTRA">
-														<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.TEXT">
-															<mat-form-field class="w-100">
-																<input matInput placeholder="{{field.placeholder}}" type="text" name="value" [formControl]="formGroup.get('extraFields').get(getExtraFieldIndex(field.id)).get('value')" [required]="field.required">
-															</mat-form-field>
-														</div>
-														<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.RICH_TEXT">
-															<ng-container formArrayName="extraFields">
-																<ng-container *ngFor="let control of extraFieldsArray().controls; let extraFieldIndex = index;">
-																	<ng-container [formGroupName]="extraFieldIndex">
-																		<ng-container *ngIf="control.get('id').value === field.id">
-																			<rich-text-editor-component [form]="control.get('value')" [placeholder]="field.placeholder" [required]="field.required">
-																			</rich-text-editor-component>
+														<div *ngIf="field.category === dmpBlueprintSectionFieldCategoryEnum.EXTRA">
+															<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.TEXT">
+																<mat-form-field class="w-100">
+																	<input matInput placeholder="{{field.placeholder}}" type="text" name="value" [formControl]="formGroup.get('extraFields').get(getExtraFieldIndex(field.id)).get('value')" [required]="field.required">
+																</mat-form-field>
+															</div>
+															<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.RICH_TEXT">
+																<ng-container formArrayName="extraFields">
+																	<ng-container *ngFor="let control of extraFieldsArray().controls; let extraFieldIndex = index;">
+																		<ng-container [formGroupName]="extraFieldIndex">
+																			<ng-container *ngIf="control.get('id').value === field.id">
+																				<rich-text-editor-component [form]="control.get('value')" [placeholder]="field.placeholder" [required]="field.required">
+																				</rich-text-editor-component>
+																			</ng-container>
 																		</ng-container>
 																	</ng-container>
 																</ng-container>
-															</ng-container>
-														</div>
-														<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.DATE">
-															<mat-form-field class="w-100">
-																<input matInput placeholder="{{field.placeholder}}" type="date" name="value" [formControl]="formGroup.get('extraFields').get(getExtraFieldIndex(field.id)).get('value')" [required]="field.required">
-															</mat-form-field>
-														</div>
-														<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.NUMBER">
-															<mat-form-field class="w-100">
-																<input matInput placeholder="{{field.placeholder}}" type="number" name="value" [formControl]="formGroup.get('extraFields').get(getExtraFieldIndex(field.id)).get('value')" [required]="field.required">
-															</mat-form-field>
+															</div>
+															<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.DATE">
+																<mat-form-field class="w-100">
+																	<input matInput placeholder="{{field.placeholder}}" type="date" name="value" [formControl]="formGroup.get('extraFields').get(getExtraFieldIndex(field.id)).get('value')" [required]="field.required">
+																</mat-form-field>
+															</div>
+															<div *ngIf="field.dataType === dmpBlueprintExtraFieldDataTypeEnum.NUMBER">
+																<mat-form-field class="w-100">
+																	<input matInput placeholder="{{field.placeholder}}" type="number" name="value" [formControl]="formGroup.get('extraFields').get(getExtraFieldIndex(field.id)).get('value')" [required]="field.required">
+																</mat-form-field>
+															</div>
 														</div>
 													</div>
 												</div>
 											</div>
 										</div>
 									</div>
-								</div>
-								<div class="col-12 card" *ngIf="section.hasTemplates">
-									{{formGroup.get('descriptionTemplates').get(section.id).value | json}}
-									<div class="row">
-										<div class="col-12">
-											<div class="input-form">
-												<div class="heading">{{'DMP-EDITOR.FIELDS.DESCRIPTION-TEMPLATES' | translate}}</div>
-												<mat-form-field class="w-100">
-													<mat-label>{{'DMP-EDITOR.FIELDS.DESCRIPTION-TEMPLATES-HINT' | translate}}</mat-label>
-													<app-multiple-auto-complete placeholder="{{'DMP-EDITOR.FIELDS.DESCRIPTION-TEMPLATES-HINT' | translate}}" [hidePlaceholder]="true" required='true' [formControl]="formGroup.get('descriptionTemplates').get(section.id)" [configuration]="descriptionTemplateService.descriptionTempalteGroupMultipleAutocompleteConfiguration" (optionRemoved)="onRemoveDescriptionTemplate($event, i)" (optionActionClicked)="onPreviewDescriptionTemplate($event, i)" (optionSelected)="onDescriptionTemplateSelected($event, i)">
-													</app-multiple-auto-complete>
-													<mat-error *ngIf="formGroup.get('descriptionTemplates').get(section.id).hasError('backendError')">{{formGroup.get('descriptionTemplates').get(section.id).getError('backendError').message}}</mat-error>
-													<mat-error *ngIf="formGroup.get('descriptionTemplates').get(section.id).hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
-												</mat-form-field>
-												<div class="col pl-0 pt-0 pb-0 d-flex">
-													<span class="not-found-template">{{'DMP-EDITOR.NO-TEMPLATE-MESSAGE' | translate}}</span>
+									<div class="col-12 card" *ngIf="section.hasTemplates">
+										{{formGroup.get('descriptionTemplates').get(section.id).value | json}}
+										<div class="row">
+											<div class="col-12">
+												<div class="input-form">
+													<div class="heading">{{'DMP-EDITOR.FIELDS.DESCRIPTION-TEMPLATES' | translate}}</div>
+													<mat-form-field class="w-100">
+														<mat-label>{{'DMP-EDITOR.FIELDS.DESCRIPTION-TEMPLATES-HINT' | translate}}</mat-label>
+														<app-multiple-auto-complete placeholder="{{'DMP-EDITOR.FIELDS.DESCRIPTION-TEMPLATES-HINT' | translate}}" [hidePlaceholder]="true" required='true' [formControl]="formGroup.get('descriptionTemplates').get(section.id)" [configuration]="descriptionTemplateService.descriptionTempalteGroupMultipleAutocompleteConfiguration" (optionRemoved)="onRemoveDescriptionTemplate($event, i)" (optionActionClicked)="onPreviewDescriptionTemplate($event, i)" (optionSelected)="onDescriptionTemplateSelected($event, i)">
+														</app-multiple-auto-complete>
+														<mat-error *ngIf="formGroup.get('descriptionTemplates').get(section.id).hasError('backendError')">{{formGroup.get('descriptionTemplates').get(section.id).getError('backendError').message}}</mat-error>
+														<mat-error *ngIf="formGroup.get('descriptionTemplates').get(section.id).hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+													</mat-form-field>
+													<div class="col pl-0 pt-0 pb-0 d-flex">
+														<span class="not-found-template">{{'DMP-EDITOR.NO-TEMPLATE-MESSAGE' | translate}}</span>
+													</div>
 												</div>
 											</div>
 										</div>
@@ -312,5 +319,4 @@
 				</div>
 			</div>
 		</div>
-	</div>
-</div>
\ No newline at end of file
+	</div>
\ No newline at end of file
diff --git a/dmp-frontend/src/app/ui/reference/reference-field/reference-field.component.html b/dmp-frontend/src/app/ui/reference/reference-field/reference-field.component.html
index e7cfc285f..9b0380701 100644
--- a/dmp-frontend/src/app/ui/reference/reference-field/reference-field.component.html
+++ b/dmp-frontend/src/app/ui/reference/reference-field/reference-field.component.html
@@ -5,6 +5,7 @@
 	<mat-error *ngIf="form.hasError('backendError')">{{form.getError('backendError').message}}</mat-error>
 	<mat-error *ngIf="form.hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
 </mat-form-field>
+{{form.errors | json}}
 <div class="mb-4">
 	<span *ngIf="!form.disabled" class="not-found">{{'REFERENCE-FIELD.COULD-NOT-FIND-MESSAGE' | translate}}</span>
 	<span *ngIf="!form.disabled" class="insert-manually" (click)="addReference($event)">{{'REFERENCE-FIELD.ACTIONS.INSERT-MANUALLY' | translate}}</span>