diff --git a/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page-form.ts b/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page-form.ts
index 1c2af7cc9..ad66bdab3 100644
--- a/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page-form.ts
+++ b/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page-form.ts
@@ -1,5 +1,6 @@
 import {Injectable} from '@angular/core';
 import {FormBuilder, FormGroup, Validators} from '@angular/forms';
+import {DataOfferFormValidators} from 'src/app/core/validators/data-offer-form-validators';
 import {ExpressionFormControls} from '../../../../component-library/policy-editor/editor/expression-form-controls';
 import {noWhitespacesOrColonsValidator} from '../../../../core/validators/no-whitespaces-or-colons-validator';
 import {
@@ -24,11 +25,16 @@ export class PolicyDefinitionCreatePageForm {
   constructor(
     private formBuilder: FormBuilder,
     private expressionFormControls: ExpressionFormControls,
+    private validators: DataOfferFormValidators,
   ) {}
 
   buildFormGroup(): FormGroup<PolicyDefinitionCreatePageFormModel> {
     return this.formBuilder.nonNullable.group({
-      id: ['', [Validators.required, noWhitespacesOrColonsValidator]],
+      id: [
+        '',
+        [Validators.required, noWhitespacesOrColonsValidator],
+        [this.validators.policyIdExistsValidator],
+      ],
       treeControls: this.expressionFormControls.formGroup,
     });
   }
diff --git a/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page.component.html b/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page.component.html
index 06b7ef5d3..79c30368a 100644
--- a/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page.component.html
+++ b/src/app/routes/connector-ui/policy-definition-create-page/policy-definition-create-page/policy-definition-create-page.component.html
@@ -10,6 +10,9 @@
     <mat-error *ngIf="ctrl.invalid && ctrl.errors?.pattern">{{
       validationMessages.invalidWhitespacesOrColonsMessage
     }}</mat-error>
+    <mat-error *ngIf="ctrl.invalid && ctrl.errors?.idAlreadyExists">{{
+      validationMessages.idExistsErrorMessage
+    }}</mat-error>
   </mat-form-field>
 
   <div class="form-section-title">Policy Expression</div>