new file   cypress/fixtures/add-forge-now-create-request-fail.json
@@ -0,0 +1,8 @@
+{
+  "status": 400,
+  "ok": false,
+  "data": {
+    "exception": "BadInputExc",
+    "reason": "{\"add-forge-comment\": [\"This field is required\"]}"
+  }
+}
\ No newline at end of file
modified   cypress/integration/add-forge-now-request-create.spec.js
@@ -136,4 +136,30 @@ describe('Test add-forge-request creation', function() {
       .should('have.class', 'badge-danger')
       .should('contain', 'already exists');
   });
+
+  it('should show error message', function() {
+    cy.userLogin();
+
+    cy.intercept(`${this.Urls.api_1_add_forge_request_create()}**`,
+                 {fixture: 'add-forge-now-create-request-fail'}).as('errorRequest');
+
+    cy.visit(this.addForgeNowUrl);
+
+    populateForm(
+      'bitbucket', 'gitlab.com', 'test', 'test@example.com', 'on', 'comment'
+    );
+    cy.get('#requestCreateForm').submit();
+
+    cy.wait('@errorRequest').then((xhr) => {
+      cy.log('response:', xhr.response);
+      cy.log(xhr.response.body);
+      const requests = xhr.response.body.data;
+      cy.log('Requests: ', requests);
+
+      cy.get('#userMessage')
+        .should('have.class', 'badge-danger')
+        .should('contain', 'field is required');
+    });
+  });
+
 });