diff --git a/dmp-frontend/src/app/ui/description/editor/description-form/components/form-field/form-field.component.html b/dmp-frontend/src/app/ui/description/editor/description-form/components/form-field/form-field.component.html
index bd376d477..36ab6c70f 100644
--- a/dmp-frontend/src/app/ui/description/editor/description-form/components/form-field/form-field.component.html
+++ b/dmp-frontend/src/app/ui/description/editor/description-form/components/form-field/form-field.component.html
@@ -17,10 +17,10 @@
 
 	<div *ngSwitchCase="descriptionTemplateFieldTypeEnum.REFERENCE_TYPES" class="col-12">
 		<ng-container *ngIf="field.data.multipleSelect">
-			<app-reference-field-component [form]="propertiesFormGroup?.get(field.id).get('references')" [label]="(field.data.label | translate) + (isRequired ? ' *': '')" [placeholder]="(field.data.label | translate) + (isRequired ? ' *': '')" [referenceType]="field.data.referenceType" [multiple]="true" [required]="isRequired" hint=""></app-reference-field-component>
+			<app-reference-field-component [form]="propertiesFormGroup?.get(field.id).get('references')" [label]="(field.data.label | translate) + (isRequired ? ' *': '')" [placeholder]="(field.data.label | translate) + (isRequired ? ' *': '')" [referenceType]="field.data.referenceType" [multiple]="true" [required]="isRequired" hint="{{ 'TYPES.DATASET-PROFILE-COMBO-BOX-TYPE.EXTERNAL-SOURCE-HINT' | translate }}"></app-reference-field-component>
 		</ng-container>
 		<ng-container *ngIf="!(field.data.multipleSelect)">
-			<app-reference-field-component [form]="propertiesFormGroup?.get(field.id).get('reference')" [label]="(field.data.label | translate) + (isRequired ? ' *': '')" [placeholder]="(field.data.label | translate) + (isRequired ? ' *': '')" [referenceType]="field.data.referenceType" [multiple]="false" [required]="isRequired" hint=""></app-reference-field-component>
+			<app-reference-field-component [form]="propertiesFormGroup?.get(field.id).get('reference')" [label]="(field.data.label | translate) + (isRequired ? ' *': '')" [placeholder]="(field.data.label | translate) + (isRequired ? ' *': '')" [referenceType]="field.data.referenceType" [multiple]="false" [required]="isRequired" hint="{{ 'TYPES.DATASET-PROFILE-COMBO-BOX-TYPE.EXTERNAL-SOURCE-HINT' | translate }}"></app-reference-field-component>
 		</ng-container>
 	</div>
 	<div *ngSwitchCase="descriptionTemplateFieldTypeEnum.SELECT" class="col-12">
@@ -53,6 +53,7 @@
 						</app-multiple-auto-complete>
 						<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textListValue').hasError('backendError')">{{propertiesFormGroup?.get(field.id).get('textListValue').getError('backendError').message}}</mat-error>
 						<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textListValue').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+						<mat-hint>{{ "TYPES.DATASET-PROFILE-COMBO-BOX-TYPE.EXTERNAL-SOURCE-HINT" | translate }}</mat-hint>
 					</mat-form-field>
 				</ng-container>
 				<ng-container *ngIf="!(field.data.multipleSelect)">
@@ -62,6 +63,7 @@
 						</app-single-auto-complete>
 						<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textValue').hasError('backendError')">{{propertiesFormGroup?.get(field.id).get('textValue').getError('backendError').message}}</mat-error>
 						<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textValue').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+						<mat-hint>{{ "TYPES.DATASET-PROFILE-COMBO-BOX-TYPE.EXTERNAL-SOURCE-HINT" | translate }}</mat-hint>
 					</mat-form-field>
 				</ng-container>
 		</div>
@@ -75,6 +77,7 @@
 					</app-multiple-auto-complete>
 					<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textListValue').hasError('backendError')">{{propertiesFormGroup?.get(field.id).get('textListValue').getError('backendError').message}}</mat-error>
 					<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textListValue').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+					<mat-hint>{{ "TYPES.DATASET-PROFILE-COMBO-BOX-TYPE.EXTERNAL-SOURCE-HINT" | translate }}</mat-hint>
 				</mat-form-field>
 			</ng-container>
 			<ng-container *ngIf="!(field.data.multipleSelect)">
@@ -84,6 +87,7 @@
 					</app-single-auto-complete>
 					<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textValue').hasError('backendError')">{{propertiesFormGroup?.get(field.id).get('textValue').getError('backendError').message}}</mat-error>
 					<mat-error *ngIf="propertiesFormGroup?.get(field.id).get('textValue').hasError('required')">{{'GENERAL.VALIDATION.REQUIRED' | translate}}</mat-error>
+					<mat-hint>{{ "TYPES.DATASET-PROFILE-COMBO-BOX-TYPE.EXTERNAL-SOURCE-HINT" | translate }}</mat-hint>
 				</mat-form-field>
 			</ng-container>
 		</div>