diff --git a/packages/core/admin/ee/server/services/__tests__/review-workflows-validation.test.js b/packages/core/admin/ee/server/services/__tests__/review-workflows-validation.test.js
new file mode 100644
index 0000000000..62993f5156
--- /dev/null
+++ b/packages/core/admin/ee/server/services/__tests__/review-workflows-validation.test.js
@@ -0,0 +1,92 @@
+'use strict';
+
+jest.mock('@strapi/strapi/lib/utils/ee', () => {
+  const eeModule = () => true;
+
+  Object.assign(eeModule, {
+    features: {
+      isEnabled() {
+        return true;
+      },
+      getEnabled() {
+        return ['review-workflows'];
+      },
+    },
+  });
+
+  return eeModule;
+});
+
+jest.mock('../review-workflows/workflows/content-types', () => {
+  return jest.fn(() => ({
+    migrate: jest.fn(),
+  }));
+});
+
+const validationServiceFactory = require('../review-workflows/validation');
+const { MAX_WORKFLOWS, MAX_STAGES_PER_WORKFLOW } = require('../../constants/workflows');
+
+const workflowsServiceMock = {
+  count: jest.fn(() => 1),
+};
+
+const servicesMock = {
+  'admin::workflows': workflowsServiceMock,
+};
+
+const strapiMock = {
+  service: jest.fn((serviceName) => console.log(serviceName) || servicesMock[serviceName]),
+};
+let validationService;
+
+describe('Review workflows - Validation service', () => {
+  beforeEach(() => {
+    validationService = validationServiceFactory({ strapi: strapiMock });
+  });
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+  describe('register', () => {
+    test('Limits object should be frozen after register', () => {
+      validationService.register({ workflows: 2, stagesPerWorkflow: 10 });
+      expect(validationService.limits.workflows).toEqual(2);
+      expect(validationService.limits.stagesPerWorkflow).toEqual(10);
+      expect(Object.isFrozen(validationService.limits)).toBe(true);
+    });
+    test(`Limits object shouldn't be frozen before register`, () => {
+      expect(validationService.limits.workflows).toEqual(MAX_WORKFLOWS);
+      expect(validationService.limits.stagesPerWorkflow).toEqual(MAX_STAGES_PER_WORKFLOW);
+      expect(Object.isFrozen(validationService.limits)).toBe(false);
+    });
+    test('Limits object should not be modified after first register', () => {
+      validationService.register({ workflows: 2, stagesPerWorkflow: 10 });
+      expect(validationService.limits.workflows).toEqual(2);
+      expect(validationService.limits.stagesPerWorkflow).toEqual(10);
+      validationService.register({ workflows: 99, stagesPerWorkflow: 99 });
+      expect(validationService.limits.workflows).toEqual(2);
+      expect(validationService.limits.stagesPerWorkflow).toEqual(10);
+    });
+  });
+  describe('validateWorkflowCount', () => {
+    test('Should not throw because limit is not reached', async () => {
+      validationService.register({ workflows: 2 });
+      workflowsServiceMock.count.mockReturnValue(1);
+      await expect(validationService.validateWorkflowCount()).resolves.not.toThrowError();
+    });
+    test('Should throw because limit is reached', async () => {
+      validationService.register({ workflows: 2 });
+      workflowsServiceMock.count.mockReturnValue(2);
+      await expect(validationService.validateWorkflowCount(1)).rejects.toThrowError();
+    });
+  });
+  describe('validateWorkflowStages', () => {
+    test('Should not throw because limit is not reached and at least 1 stage', async () => {
+      validationService.register({ stagesPerWorkflow: 2 });
+      expect(() => validationService.validateWorkflowStages([{}, {}])).not.toThrowError();
+    });
+    test('Should throw because limit is reached', async () => {
+      validationService.register({ stagesPerWorkflow: 2 });
+      expect(() => validationService.validateWorkflowStages([{}, {}, {}])).toThrowError();
+    });
+  });
+});
diff --git a/packages/core/admin/ee/server/services/review-workflows/validation.js b/packages/core/admin/ee/server/services/review-workflows/validation.js
index 900ca6cfa8..3e4f2f780c 100644
--- a/packages/core/admin/ee/server/services/review-workflows/validation.js
+++ b/packages/core/admin/ee/server/services/review-workflows/validation.js
@@ -6,19 +6,18 @@ const { ERRORS, MAX_WORKFLOWS, MAX_STAGES_PER_WORKFLOW } = require('../../consta
 const { clampMaxWorkflows, clampMaxStagesPerWorkflow } = require('../../utils/review-workflows');
 
 module.exports = ({ strapi }) => {
-  const limits = {
-    workflows: MAX_WORKFLOWS,
-    stagesPerWorkflow: MAX_STAGES_PER_WORKFLOW,
-  };
-
   return {
+    limits: {
+      workflows: MAX_WORKFLOWS,
+      stagesPerWorkflow: MAX_STAGES_PER_WORKFLOW,
+    },
     register({ workflows, stagesPerWorkflow }) {
-      if (!Object.isFrozen(limits)) {
-        limits.workflows = clampMaxWorkflows(workflows || limits.workflows);
-        limits.stagesPerWorkflow = clampMaxStagesPerWorkflow(
-          stagesPerWorkflow || limits.stagesPerWorkflow
+      if (!Object.isFrozen(this.limits)) {
+        this.limits.workflows = clampMaxWorkflows(workflows || this.limits.workflows);
+        this.limits.stagesPerWorkflow = clampMaxStagesPerWorkflow(
+          stagesPerWorkflow || this.limits.stagesPerWorkflow
         );
-        Object.freeze(limits);
+        Object.freeze(this.limits);
       }
     },
     /**
@@ -30,7 +29,7 @@ module.exports = ({ strapi }) => {
       if (!stages || stages.length === 0) {
         throw new ValidationError(ERRORS.WORKFLOW_WITHOUT_STAGES);
       }
-      if (stages.length > limits.stagesPerWorkflow) {
+      if (stages.length > this.limits.stagesPerWorkflow) {
         throw new ValidationError(ERRORS.STAGES_LIMIT);
       }
     },
@@ -44,7 +43,7 @@ module.exports = ({ strapi }) => {
     async validateWorkflowCount(countAddedWorkflows = 0) {
       const workflowsService = getService('workflows', { strapi });
       const countWorkflows = await workflowsService.count();
-      if (countWorkflows + countAddedWorkflows > limits.workflows) {
+      if (countWorkflows + countAddedWorkflows > this.limits.workflows) {
         throw new ValidationError(ERRORS.WORKFLOWS_LIMIT);
       }
     },