diff --git a/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.test.ts b/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.test.ts
index fe8b41a9f3..3c4442afea 100644
--- a/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.test.ts
+++ b/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.test.ts
@@ -272,4 +272,59 @@ describe('createAsyncValidators', () => {
       },
     });
   });
+
+  it('should call a validator for array property from a custom field extension', async () => {
+    const schema: JsonObject = {
+      type: 'object',
+      properties: {
+        tags: {
+          title: 'Tags',
+          type: 'array',
+          items: {
+            type: 'string',
+            'ui:field': 'TagField',
+          },
+        },
+      },
+    };
+
+    const validators = { TagField: jest.fn() };
+
+    const validate = createAsyncValidators(schema, validators, {
+      apiHolder: { get: jest.fn() },
+    });
+
+    await validate({
+      tags: ['tag-1', 'tag-2'],
+    });
+
+    expect(validators.TagField).toHaveBeenCalled();
+  });
+
+  it('should does not call a validator if no ui field specified', async () => {
+    const schema: JsonObject = {
+      type: 'object',
+      properties: {
+        tags: {
+          title: 'Tags',
+          type: 'array',
+          items: {
+            type: 'string',
+          },
+        },
+      },
+    };
+
+    const validators = { TagField: jest.fn() };
+
+    const validate = createAsyncValidators(schema, validators, {
+      apiHolder: { get: jest.fn() },
+    });
+
+    await validate({
+      tags: ['asd', 'asd$'],
+    });
+
+    expect(validators.TagField).not.toHaveBeenCalled();
+  });
 });
diff --git a/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.ts b/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.ts
index 86b7619b34..b524944719 100644
--- a/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.ts
+++ b/plugins/scaffolder-react/src/next/components/Stepper/createAsyncValidators.ts
@@ -15,7 +15,7 @@
  */
 
 import { FieldValidation } from '@rjsf/utils';
-import type { JsonObject } from '@backstage/types';
+import type { JsonObject, JsonValue } from '@backstage/types';
 import { ApiHolder } from '@backstage/core-plugin-api';
 import { Draft07 as JSONSchema } from 'json-schema-library';
 import { createFieldValidation } from '../../lib';
@@ -44,20 +44,38 @@ export const createAsyncValidators = (
     const parsedSchema = new JSONSchema(rootSchema);
     const formValidation: FormValidation = {};
 
+    const validateForm = async (
+      validatorName: string,
+      key: string,
+      value: JsonValue | undefined,
+    ) => {
+      const validator = validators[validatorName];
+      if (validator) {
+        const fieldValidation = createFieldValidation();
+        try {
+          await validator(value, fieldValidation, { ...context, formData });
+        } catch (ex) {
+          fieldValidation.addError(ex.message);
+        }
+        formValidation[key] = fieldValidation;
+      }
+    };
+
     for (const [key, value] of Object.entries(current)) {
       const path = `${pathPrefix}/${key}`;
       const definitionInSchema = parsedSchema.getSchema(path, formData);
 
       if (definitionInSchema && 'ui:field' in definitionInSchema) {
-        const validator = validators[definitionInSchema['ui:field']];
-        if (validator) {
-          const fieldValidation = createFieldValidation();
-          try {
-            await validator(value, fieldValidation, { ...context, formData });
-          } catch (ex) {
-            fieldValidation.addError(ex.message);
-          }
-          formValidation[key] = fieldValidation;
+        if ('ui:field' in definitionInSchema) {
+          await validateForm(definitionInSchema['ui:field'], key, value);
+        }
+      } else if (
+        definitionInSchema &&
+        definitionInSchema.items &&
+        'ui:field' in definitionInSchema.items
+      ) {
+        if ('ui:field' in definitionInSchema.items) {
+          await validateForm(definitionInSchema.items['ui:field'], key, value);
         }
       } else if (isObject(value)) {
         formValidation[key] = await validate(formData, path, value);
diff --git a/plugins/scaffolder/src/components/TemplatePage/createValidator.test.ts b/plugins/scaffolder/src/components/TemplatePage/createValidator.test.ts
index 777de0cc36..f5be77811a 100644
--- a/plugins/scaffolder/src/components/TemplatePage/createValidator.test.ts
+++ b/plugins/scaffolder/src/components/TemplatePage/createValidator.test.ts
@@ -57,7 +57,7 @@ describe('createValidator', () => {
     apiHolder: apiHolderMock,
   };
 
-  it('Should call validator for object property from a custom field extension', () => {
+  it('should call validator for object property from a custom field extension', () => {
     /* GIVEN */
     const rootSchema = {
       title: 'Title',
@@ -89,7 +89,7 @@ describe('createValidator', () => {
     expect(result.p1.addError).toHaveBeenCalledTimes(1);
   });
 
-  it('Should call validator for array property from a custom field extension', () => {
+  it('should call validator for array property from a custom field extension', () => {
     /* GIVEN */
     const rootSchema = {
       title: 'My form',