diff --git a/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.html b/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.html
index baf15c7bd01..e4707e495c3 100644
--- a/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.html
+++ b/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.html
@@ -77,7 +77,7 @@ <h2 class="cx-checkout-title d-none d-lg-block d-xl-block">
 </ng-container>
 
 <ng-template #loading>
-  <div class="cx-spinner">
+  <div class="cx-spinner" *ngIf="!paymentTypesError">
     <cx-spinner></cx-spinner>
   </div>
 </ng-template>
diff --git a/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.spec.ts b/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.spec.ts
index 505e8782429..432275a3cc0 100644
--- a/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.spec.ts
+++ b/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.spec.ts
@@ -6,7 +6,11 @@ import { PaymentType } from '@spartacus/cart/base/root';
 import { CheckoutPaymentTypeFacade } from '@spartacus/checkout/b2b/root';
 import { CheckoutStepService } from '@spartacus/checkout/base/components';
 import { CheckoutStepType } from '@spartacus/checkout/base/root';
-import { I18nTestingModule, QueryState } from '@spartacus/core';
+import {
+  GlobalMessageService,
+  I18nTestingModule,
+  QueryState,
+} from '@spartacus/core';
 import { BehaviorSubject, of } from 'rxjs';
 import { take } from 'rxjs/operators';
 import { CheckoutPaymentTypeComponent } from './checkout-payment-type.component';
@@ -18,6 +22,9 @@ import createSpy = jasmine.createSpy;
 })
 class MockSpinnerComponent {}
 
+class MockGlobalMessageService {
+  add = createSpy();
+}
 class MockCheckoutPaymentTypeService
   implements Partial<CheckoutPaymentTypeFacade>
 {
@@ -92,6 +99,10 @@ describe('CheckoutOnePaymentTypeComponent', () => {
             useClass: MockCheckoutStepService,
           },
           { provide: ActivatedRoute, useValue: mockActivatedRoute },
+          {
+            provide: GlobalMessageService,
+            useClass: MockGlobalMessageService,
+          },
         ],
       }).compileComponents();
 
@@ -145,6 +156,10 @@ describe('CheckoutPaymentTypeComponent', () => {
             useClass: MockCheckoutStepService,
           },
           { provide: ActivatedRoute, useValue: mockActivatedRoute },
+          {
+            provide: GlobalMessageService,
+            useClass: MockGlobalMessageService,
+          },
         ],
       }).compileComponents();
 
diff --git a/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.ts b/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.ts
index 859cf31e525..55069a21be2 100644
--- a/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.ts
+++ b/feature-libs/checkout/b2b/components/checkout-payment-type/checkout-payment-type.component.ts
@@ -8,6 +8,7 @@ import {
   ChangeDetectionStrategy,
   Component,
   ElementRef,
+  Optional,
   ViewChild,
 } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
@@ -18,9 +19,22 @@ import {
 } from '@spartacus/checkout/b2b/root';
 import { CheckoutStepService } from '@spartacus/checkout/base/components';
 import { CheckoutStepType } from '@spartacus/checkout/base/root';
-import { getLastValueSync, isNotUndefined } from '@spartacus/core';
-import { BehaviorSubject, combineLatest, Observable } from 'rxjs';
-import { distinctUntilChanged, filter, map, tap } from 'rxjs/operators';
+import {
+  GlobalMessageService,
+  GlobalMessageType,
+  HttpErrorModel,
+  OccHttpErrorType,
+  getLastValueSync,
+  isNotUndefined,
+} from '@spartacus/core';
+import { BehaviorSubject, Observable, combineLatest, of } from 'rxjs';
+import {
+  catchError,
+  distinctUntilChanged,
+  filter,
+  map,
+  tap,
+} from 'rxjs/operators';
 
 @Component({
   selector: 'cx-payment-type',
@@ -34,6 +48,7 @@ export class CheckoutPaymentTypeComponent {
   protected busy$ = new BehaviorSubject<boolean>(false);
 
   typeSelected?: string;
+  paymentTypesError = false;
 
   isUpdating$ = combineLatest([
     this.busy$,
@@ -45,8 +60,24 @@ export class CheckoutPaymentTypeComponent {
     distinctUntilChanged()
   );
 
-  paymentTypes$: Observable<PaymentType[]> =
-    this.checkoutPaymentTypeFacade.getPaymentTypes();
+  paymentTypes$: Observable<PaymentType[]> = this.checkoutPaymentTypeFacade
+    .getPaymentTypes()
+    .pipe(
+      tap(() => (this.paymentTypesError = false)),
+      catchError((error: HttpErrorModel) => {
+        if (
+          error.details?.[0]?.type === OccHttpErrorType.CLASS_MISMATCH_ERROR &&
+          this.globalMessageService
+        ) {
+          this.globalMessageService.add(
+            { key: 'httpHandlers.forbidden' },
+            GlobalMessageType.MSG_TYPE_ERROR
+          );
+          this.paymentTypesError = true;
+        }
+        return of([]);
+      })
+    );
 
   typeSelected$: Observable<PaymentType> = combineLatest([
     this.checkoutPaymentTypeFacade.getSelectedPaymentTypeState().pipe(
@@ -105,10 +136,30 @@ export class CheckoutPaymentTypeComponent {
       distinctUntilChanged()
     );
 
+  // TODO(CXSPA-3334): make globalMessageService a required dependency
+  constructor(
+    checkoutPaymentTypeFacade: CheckoutPaymentTypeFacade,
+    checkoutStepService: CheckoutStepService,
+    activatedRoute: ActivatedRoute,
+    // eslint-disable-next-line @typescript-eslint/unified-signatures
+    globalMessageService?: GlobalMessageService
+  );
+
+  /**
+   * @deprecated since 6.3
+   */
+  constructor(
+    checkoutPaymentTypeFacade: CheckoutPaymentTypeFacade,
+    checkoutStepService: CheckoutStepService,
+    activatedRoute: ActivatedRoute,
+    globalMessageService: GlobalMessageService
+  );
+
   constructor(
     protected checkoutPaymentTypeFacade: CheckoutPaymentTypeFacade,
     protected checkoutStepService: CheckoutStepService,
-    protected activatedRoute: ActivatedRoute
+    protected activatedRoute: ActivatedRoute,
+    @Optional() protected globalMessageService?: GlobalMessageService
   ) {}
 
   changeType(code: string): void {
diff --git a/feature-libs/checkout/b2b/core/facade/checkout-payment-type.service.ts b/feature-libs/checkout/b2b/core/facade/checkout-payment-type.service.ts
index a78be7f3333..5cb0805efb0 100644
--- a/feature-libs/checkout/b2b/core/facade/checkout-payment-type.service.ts
+++ b/feature-libs/checkout/b2b/core/facade/checkout-payment-type.service.ts
@@ -19,6 +19,7 @@ import {
   CommandService,
   CommandStrategy,
   EventService,
+  HttpErrorModel,
   OCC_USER_ID_ANONYMOUS,
   Query,
   QueryNotifier,
@@ -26,8 +27,8 @@ import {
   QueryState,
   UserIdService,
 } from '@spartacus/core';
-import { combineLatest, Observable } from 'rxjs';
-import { filter, map, switchMap, take, tap } from 'rxjs/operators';
+import { Observable, combineLatest, of, throwError } from 'rxjs';
+import { concatMap, filter, map, switchMap, take, tap } from 'rxjs/operators';
 import { CheckoutPaymentTypeConnector } from '../connectors/checkout-payment-type/checkout-payment-type.connector';
 
 @Injectable()
@@ -119,7 +120,14 @@ export class CheckoutPaymentTypeService implements CheckoutPaymentTypeFacade {
   }
 
   getPaymentTypes(): Observable<PaymentType[]> {
-    return this.getPaymentTypesState().pipe(map((state) => state.data ?? []));
+    return this.getPaymentTypesState().pipe(
+      concatMap((state) =>
+        (state?.error as HttpErrorModel)
+          ? throwError(state.error as HttpErrorModel)
+          : of(state)
+      ),
+      map((state) => state.data ?? [])
+    );
   }
 
   setPaymentType(
diff --git a/projects/core/src/util/occ-http-error-constants.ts b/projects/core/src/util/occ-http-error-constants.ts
index b491c68ad07..bd8d4efc6c8 100644
--- a/projects/core/src/util/occ-http-error-constants.ts
+++ b/projects/core/src/util/occ-http-error-constants.ts
@@ -8,6 +8,7 @@
 
 export declare const enum OccHttpErrorType {
   NOT_FOUND_ERROR = 'NotFoundError',
+  CLASS_MISMATCH_ERROR = 'ClassMismatchError',
 }
 
 export declare const enum OccHttpErrorReason {