diff --git a/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.component.ts b/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.component.ts
index ba8a9fc32..6594a1e2e 100644
--- a/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.component.ts
+++ b/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.component.ts
@@ -227,6 +227,15 @@ export class ReferenceTypeEditorComponent extends BaseEditor<ReferenceTypeEditor
 
 		(this.formGroup.get('definition').get('fields') as FormArray).removeAt(fieldIndex);
 
+		//Reapply validators
+		ReferenceTypeEditorModel.reApplyDefinitionFieldsValidators(
+			{
+				formGroup: this.formGroup,
+				validationErrorModel: this.editorModel.validationErrorModel
+			}
+		)
+		this.formGroup.get('definition').get('fields').markAsDirty();
+
 		const sourceFormArray = ((this.formGroup.get('definition').get('sources') as FormArray));
 		for (let i = 0; i < sourceFormArray.length; i++) {
 
diff --git a/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.model.ts b/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.model.ts
index 52f040146..febf00e7a 100644
--- a/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.model.ts
+++ b/dmp-frontend/src/app/ui/admin/reference-type/editor/reference-type-editor.model.ts
@@ -1,4 +1,4 @@
-import { UntypedFormBuilder, UntypedFormGroup, Validators } from "@angular/forms";
+import { UntypedFormArray, UntypedFormBuilder, UntypedFormGroup, Validators } from "@angular/forms";
 import { ReferenceFieldDataType } from "@app/core/common/enum/reference-field-data-type";
 import { ReferenceTypeExternalApiHTTPMethodType } from "@app/core/common/enum/reference-type-external-api-http-method-type";
 import { ReferenceTypeSourceType } from "@app/core/common/enum/reference-type-source-type";
@@ -63,6 +63,20 @@ export class ReferenceTypeEditorModel extends BaseEditorModel implements Referen
 		const field: ReferenceTypeFieldEditorModel = new ReferenceTypeFieldEditorModel(this.validationErrorModel);
 		return field.buildForm({ rootPath: 'definition.fields[' + index + '].' });
 	}
+
+	static reApplyDefinitionFieldsValidators(params: {
+		formGroup: UntypedFormGroup,
+		validationErrorModel: ValidationErrorModel,
+	}): void {
+
+		const { formGroup, validationErrorModel } = params;
+		const control = formGroup?.get('definition');
+		ReferenceTypeDefinitionEditorModel.reapplyFieldsValidators({
+			formArray: control.get('fields') as UntypedFormArray,
+			rootPath: `definition.`,
+			validationErrorModel: validationErrorModel
+		});
+	}
 }
 
 export class ReferenceTypeDefinitionEditorModel implements ReferenceTypeDefinitionPersist {
@@ -133,6 +147,21 @@ export class ReferenceTypeDefinitionEditorModel implements ReferenceTypeDefiniti
 		return baseContext;
 	}
 
+	static reapplyFieldsValidators(params: {
+		formArray: UntypedFormArray,
+		validationErrorModel: ValidationErrorModel,
+		rootPath: string
+	}): void {
+		const { validationErrorModel, rootPath, formArray } = params;
+		formArray?.controls?.forEach(
+			(control, index) => ReferenceTypeFieldEditorModel.reapplyValidators({
+				formGroup: control as UntypedFormGroup,
+				rootPath: `${rootPath}fields[${index}].`,
+				validationErrorModel: validationErrorModel
+			})
+		);
+	}
+
 }
 
 export class ReferenceTypeFieldEditorModel implements ReferenceTypeFieldPersist {
@@ -195,6 +224,24 @@ export class ReferenceTypeFieldEditorModel implements ReferenceTypeFieldPersist
 		return baseContext;
 	}
 
+	static reapplyValidators(params: {
+		formGroup: UntypedFormGroup,
+		validationErrorModel: ValidationErrorModel,
+		rootPath: string
+	}): void {
+
+		const { formGroup, rootPath, validationErrorModel } = params;
+		const context = ReferenceTypeFieldEditorModel.createValidationContext({
+			rootPath,
+			validationErrorModel
+		});
+
+		['code', 'label', 'description', 'dataType'].forEach(keyField => {
+			const control = formGroup?.get(keyField);
+			control?.clearValidators();
+			control?.addValidators(context.getValidation(keyField).validators);
+		})
+	}
 }
 
 export class ReferenceTypeSourceBaseConfigurationEditorModel implements ReferenceTypeSourceBaseConfigurationPersist {