diff --git a/src/app/features/admin/categories/facade/admin-categories.facade.ts b/src/app/features/admin/categories/facade/admin-categories.facade.ts
index ff9347f..0101102 100644
--- a/src/app/features/admin/categories/facade/admin-categories.facade.ts
+++ b/src/app/features/admin/categories/facade/admin-categories.facade.ts
@@ -137,6 +137,7 @@ export class AdminCategoriesFacade {
   readonly dirty = signal(false);
   readonly slugTaken = signal(false);
   readonly slugCheckError = signal(false);
+  readonly mutationError = signal<string | null>(null);
   private savedSnapshot: string | null = null;
   private draftStorageKey: string | null = null;
 
@@ -326,10 +327,11 @@ export class AdminCategoriesFacade {
     });
   }
 
-  saveDraft(publish: boolean): void {
+  saveDraft(publish: boolean, onSuccess?: () => void): void {
     const draft = this.draft();
     if (!draft || this.slugTaken() || this.slugCheckError()) return;
 
+    this.mutationError.set(null);
     const toSave: AdminCategory = { ...draft, status: publish ? 'published' : 'draft', updatedAt: new Date().toISOString() };
     const request = this.editorMode() === 'create' ? this.gateway.createCategory(toSave) : this.gateway.updateCategory(toSave);
 
@@ -342,7 +344,9 @@ export class AdminCategoriesFacade {
         this.savedSnapshot = JSON.stringify(saved);
         this.dirty.set(false);
         this.loadList();
-      }
+        onSuccess?.();
+      },
+      error: () => this.mutationError.set('common.errorDescription')
     });
   }
 
@@ -357,7 +361,11 @@ export class AdminCategoriesFacade {
   }
 
   deleteOne(id: string): void {
-    this.gateway.deleteCategory(id).pipe(take(1)).subscribe({ next: () => { this.loadList(); this.loadDashboardStats(); } });
+    this.mutationError.set(null);
+    this.gateway.deleteCategory(id).pipe(take(1)).subscribe({
+      next: () => { this.loadList(); this.loadDashboardStats(); },
+      error: () => this.mutationError.set('common.errorDescription')
+    });
   }
 
   restoreOne(id: string): void {
diff --git a/src/app/features/admin/categories/pages/admin-categories-list-page.component.ts b/src/app/features/admin/categories/pages/admin-categories-list-page.component.ts
index 7306184..7ac61c3 100644
--- a/src/app/features/admin/categories/pages/admin-categories-list-page.component.ts
+++ b/src/app/features/admin/categories/pages/admin-categories-list-page.component.ts
@@ -71,6 +71,14 @@ import { TranslatePipe } from '../../../../i18n/translate.pipe';
           <app-button variant="primary" (click)="deleteBlockedMessage.set(null)">{{ 'common.confirm' | translate }}</app-button>
         </div>
       </app-dialog>
+    }
+    @if (facade.mutationError()) {
+      <app-dialog [open]="true" [titleText]="'common.errorTitle' | translate" size="sm" (closed)="facade.mutationError.set(null)">
+        <p>{{ 'common.errorDescription' | translate }}</p>
+        <div class="app-confirm-dialog__actions">
+          <app-button variant="primary" (click)="facade.mutationError.set(null)">{{ 'common.confirm' | translate }}</app-button>
+        </div>
+      </app-dialog>
     }`,
   changeDetection: ChangeDetectionStrategy.OnPush
 })
diff --git a/src/app/features/admin/categories/pages/admin-category-editor-page.component.ts b/src/app/features/admin/categories/pages/admin-category-editor-page.component.ts
index 8ce2499..725ec56 100644
--- a/src/app/features/admin/categories/pages/admin-category-editor-page.component.ts
+++ b/src/app/features/admin/categories/pages/admin-category-editor-page.component.ts
@@ -4,12 +4,22 @@ import { AdminCategoriesFacade } from '../facade/admin-categories.facade';
 import { AdminCategoryFormComponent } from '../components/admin-category-form.component';
 import { TranslatePipe } from '../../../../i18n/translate.pipe';
 import { LanguageService } from '../../../../services/language.service';
+import { DialogComponent } from '../../../../shared/ui/dialog/dialog.component';
+import { ButtonComponent } from '../../../../shared/ui/button/button.component';
 
 @Component({
   selector: 'app-admin-category-editor-page',
   standalone: true,
-  imports: [AdminCategoryFormComponent, TranslatePipe],
-  template: `@if (facade.draft(); as draft) {<main class="editor-page"><header><h1>{{ title() | translate }}</h1></header><app-admin-category-form [category]="draft" [parentOptions]="parentOptions()" [breadcrumb]="facade.breadcrumbFor(draft.parentId)" [children]="facade.childrenOf(draft.id)" [slugTaken]="facade.slugTaken()" [slugCheckError]="facade.slugCheckError()" [locales]="facade.supportedLocales()" [mode]="facade.editorMode()" [health]="facade.health(draft)" (categoryChange)="facade.updateDraft($event)" (saveDraft)="save(false)" (publish)="save(true)" /></main>} @else {<main class="editor-page"><p>{{ 'common.loading' | translate }}</p></main>}`,
+  imports: [AdminCategoryFormComponent, TranslatePipe, DialogComponent, ButtonComponent],
+  template: `@if (facade.draft(); as draft) {<main class="editor-page"><header><h1>{{ title() | translate }}</h1></header><app-admin-category-form [category]="draft" [parentOptions]="parentOptions()" [breadcrumb]="facade.breadcrumbFor(draft.parentId)" [children]="facade.childrenOf(draft.id)" [slugTaken]="facade.slugTaken()" [slugCheckError]="facade.slugCheckError()" [locales]="facade.supportedLocales()" [mode]="facade.editorMode()" [health]="facade.health(draft)" (categoryChange)="facade.updateDraft($event)" (saveDraft)="save(false)" (publish)="save(true)" /></main>} @else {<main class="editor-page"><p>{{ 'common.loading' | translate }}</p></main>}
+  @if (facade.mutationError()) {
+    <app-dialog [open]="true" [titleText]="'common.errorTitle' | translate" size="sm" (closed)="facade.mutationError.set(null)">
+      <p>{{ 'common.errorDescription' | translate }}</p>
+      <div class="app-confirm-dialog__actions">
+        <app-button variant="primary" (click)="facade.mutationError.set(null)">{{ 'common.confirm' | translate }}</app-button>
+      </div>
+    </app-dialog>
+  }`,
   styles: [`.editor-page { max-width: 1120px; margin: 0 auto; padding: 24px; display: grid; gap: 16px; } .editor-page h1, .editor-page p { margin: 0; }`],
   changeDetection: ChangeDetectionStrategy.OnPush
 })
@@ -41,8 +51,9 @@ export class AdminCategoryEditorPageComponent {
   }
 
   save(publish: boolean): void {
-    this.facade.saveDraft(publish);
-    void this.router.navigate([this.languageService.currentLanguage(), 'backoffice', 'categories']);
+    this.facade.saveDraft(publish, () => {
+      void this.router.navigate([this.languageService.currentLanguage(), 'backoffice', 'categories']);
+    });
   }
 
   private descendantIds(id: string): string[] {
diff --git a/src/app/features/admin/products/facade/admin-products.facade.ts b/src/app/features/admin/products/facade/admin-products.facade.ts
index f7bc50b..abffd3c 100644
--- a/src/app/features/admin/products/facade/admin-products.facade.ts
+++ b/src/app/features/admin/products/facade/admin-products.facade.ts
@@ -92,6 +92,7 @@ export class AdminProductsFacade {
   readonly categories = signal<AdminProductCategoryOption[]>([]);
   readonly loading = signal(false);
   readonly error = signal<string | null>(null);
+  readonly mutationError = signal<string | null>(null);
   readonly selectedIds = signal<string[]>([]);
   readonly draft = signal<AdminProduct | null>(null);
   readonly dirty = signal(false);
@@ -305,18 +306,26 @@ export class AdminProductsFacade {
     this.dirty.set(true);
   }
 
-  saveDraft(): void {
+  saveDraft(onSuccess?: () => void): void {
     const draft = this.draft();
     if (!draft) return;
 
+    this.mutationError.set(null);
     const request = this.editorMode() === 'create'
       ? this.gateway.createProduct(draft)
       : this.gateway.updateProduct(draft);
 
-    request.pipe(take(1)).subscribe({ next: () => { this.dirty.set(false); this.loadList(); } });
+    request.pipe(take(1)).subscribe({
+      next: () => { this.dirty.set(false); this.loadList(); onSuccess?.(); },
+      error: () => this.mutationError.set('common.errorDescription')
+    });
   }
 
   deleteOne(id: string): void {
-    this.gateway.deleteProduct(id).pipe(take(1)).subscribe({ next: () => this.loadList() });
+    this.mutationError.set(null);
+    this.gateway.deleteProduct(id).pipe(take(1)).subscribe({
+      next: () => this.loadList(),
+      error: () => this.mutationError.set('common.errorDescription')
+    });
   }
 }
diff --git a/src/app/features/admin/products/pages/admin-product-editor-page.component.ts b/src/app/features/admin/products/pages/admin-product-editor-page.component.ts
index 643a7fe..5b5c3fb 100644
--- a/src/app/features/admin/products/pages/admin-product-editor-page.component.ts
+++ b/src/app/features/admin/products/pages/admin-product-editor-page.component.ts
@@ -4,12 +4,22 @@ import { AdminProductsFacade } from '../facade/admin-products.facade';
 import { AdminProductFormComponent } from '../components/admin-product-form.component';
 import { TranslatePipe } from '../../../../i18n/translate.pipe';
 import { LanguageService } from '../../../../services/language.service';
+import { DialogComponent } from '../../../../shared/ui/dialog/dialog.component';
+import { ButtonComponent } from '../../../../shared/ui/button/button.component';
 
 @Component({
   selector: 'app-admin-product-editor-page',
   standalone: true,
-  imports: [AdminProductFormComponent, TranslatePipe],
-  template: `@if (facade.draft(); as draft) {<main class="editor-page"><header><h1>{{ title() | translate }}</h1></header><app-admin-product-form [product]="draft" [categories]="facade.categories()" [allProducts]="facade.products()" [locales]="facade.supportedLocales()" [mode]="facade.editorMode()" [health]="facade.health(draft)" (productChange)="facade.updateDraft($event)" (save)="save()" /></main>} @else {<main class="editor-page"><p>{{ 'common.loading' | translate }}</p></main>}`,
+  imports: [AdminProductFormComponent, TranslatePipe, DialogComponent, ButtonComponent],
+  template: `@if (facade.draft(); as draft) {<main class="editor-page"><header><h1>{{ title() | translate }}</h1></header><app-admin-product-form [product]="draft" [categories]="facade.categories()" [allProducts]="facade.products()" [locales]="facade.supportedLocales()" [mode]="facade.editorMode()" [health]="facade.health(draft)" (productChange)="facade.updateDraft($event)" (save)="save()" /></main>} @else {<main class="editor-page"><p>{{ 'common.loading' | translate }}</p></main>}
+  @if (facade.mutationError()) {
+    <app-dialog [open]="true" [titleText]="'common.errorTitle' | translate" size="sm" (closed)="facade.mutationError.set(null)">
+      <p>{{ 'common.errorDescription' | translate }}</p>
+      <div class="app-confirm-dialog__actions">
+        <app-button variant="primary" (click)="facade.mutationError.set(null)">{{ 'common.confirm' | translate }}</app-button>
+      </div>
+    </app-dialog>
+  }`,
   styles: [`.editor-page { max-width: 1120px; margin: 0 auto; padding: 24px; display: grid; gap: 16px; } .editor-page h1, .editor-page p { margin: 0; }`],
   changeDetection: ChangeDetectionStrategy.OnPush
 })
@@ -33,7 +43,8 @@ export class AdminProductEditorPageComponent {
   }
 
   save(): void {
-    this.facade.saveDraft();
-    void this.router.navigate([this.languageService.currentLanguage(), 'backoffice', 'products']);
+    this.facade.saveDraft(() => {
+      void this.router.navigate([this.languageService.currentLanguage(), 'backoffice', 'products']);
+    });
   }
 }
diff --git a/src/app/features/admin/products/pages/admin-products-list-page.component.ts b/src/app/features/admin/products/pages/admin-products-list-page.component.ts
index 3676f3c..334b10f 100644
--- a/src/app/features/admin/products/pages/admin-products-list-page.component.ts
+++ b/src/app/features/admin/products/pages/admin-products-list-page.component.ts
@@ -5,11 +5,13 @@ import { AdminProductsListComponent } from '../components/admin-products-list.co
 import { LanguageService } from '../../../../services/language.service';
 import { ConfirmDialogComponent } from '../../../../shared/ui/confirm-dialog/confirm-dialog.component';
 import { TranslatePipe } from '../../../../i18n/translate.pipe';
+import { DialogComponent } from '../../../../shared/ui/dialog/dialog.component';
+import { ButtonComponent } from '../../../../shared/ui/button/button.component';
 
 @Component({
   selector: 'app-admin-products-list-page',
   standalone: true,
-  imports: [AdminProductsListComponent, ConfirmDialogComponent, TranslatePipe],
+  imports: [AdminProductsListComponent, ConfirmDialogComponent, TranslatePipe, DialogComponent, ButtonComponent],
   template: `<app-admin-products-list
     [products]="facade.products()"
     [categories]="facade.categories()"
@@ -57,7 +59,15 @@ import { TranslatePipe } from '../../../../i18n/translate.pipe';
       [message]="'adminProducts.confirmBulkDelete' | translate"
       [destructive]="true"
       (confirmed)="confirmBulkDelete()"
-      (cancelled)="bulkDeleteConfirmOpen.set(false)" />`,
+      (cancelled)="bulkDeleteConfirmOpen.set(false)" />
+    @if (facade.mutationError()) {
+      <app-dialog [open]="true" [titleText]="'common.errorTitle' | translate" size="sm" (closed)="facade.mutationError.set(null)">
+        <p>{{ 'common.errorDescription' | translate }}</p>
+        <div class="app-confirm-dialog__actions">
+          <app-button variant="primary" (click)="facade.mutationError.set(null)">{{ 'common.confirm' | translate }}</app-button>
+        </div>
+      </app-dialog>
+    }`,
   changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class AdminProductsListPageComponent {
diff --git a/src/app/features/admin/users/facade/admin-users.facade.ts b/src/app/features/admin/users/facade/admin-users.facade.ts
index 3b95261..aeb89d2 100644
--- a/src/app/features/admin/users/facade/admin-users.facade.ts
+++ b/src/app/features/admin/users/facade/admin-users.facade.ts
@@ -12,6 +12,7 @@ export class AdminUsersFacade {
   readonly invitations = signal<AdminInvitation[]>([]);
   readonly loading = signal(false);
   readonly error = signal(false);
+  readonly mutationError = signal<string | null>(null);
   readonly sessionsTarget = signal<AdminUser | null>(null);
   readonly sessions = signal<AdminSession[]>([]);
   readonly auditTarget = signal<AdminUser | null>(null);
@@ -33,16 +34,28 @@ export class AdminUsersFacade {
   }
 
   setRole(userId: string, roleId: string): void {
-    this.gateway.setUserRole(userId, roleId).pipe(take(1)).subscribe({ next: () => this.loadAll() });
+    this.mutationError.set(null);
+    this.gateway.setUserRole(userId, roleId).pipe(take(1)).subscribe({
+      next: () => this.loadAll(),
+      error: () => this.mutationError.set('common.errorDescription')
+    });
   }
 
   setStatus(userId: string, status: AdminUserStatus): void {
-    this.gateway.setUserStatus(userId, status).pipe(take(1)).subscribe({ next: () => this.loadAll() });
+    this.mutationError.set(null);
+    this.gateway.setUserStatus(userId, status).pipe(take(1)).subscribe({
+      next: () => this.loadAll(),
+      error: () => this.mutationError.set('common.errorDescription')
+    });
   }
 
   invite(email: string, roleId: string, scope: AdminUserScope): void {
     if (!email.trim()) return;
-    this.gateway.inviteUser(email.trim(), roleId, scope).pipe(take(1)).subscribe({ next: () => this.loadAll() });
+    this.mutationError.set(null);
+    this.gateway.inviteUser(email.trim(), roleId, scope).pipe(take(1)).subscribe({
+      next: () => this.loadAll(),
+      error: () => this.mutationError.set('common.errorDescription')
+    });
   }
 
   revokeInvitation(id: string): void {
diff --git a/src/app/features/admin/users/pages/admin-users-page.component.html b/src/app/features/admin/users/pages/admin-users-page.component.html
index 0672c20..42b4ca1 100644
--- a/src/app/features/admin/users/pages/admin-users-page.component.html
+++ b/src/app/features/admin/users/pages/admin-users-page.component.html
@@ -128,4 +128,13 @@
     [destructive]="true"
     (confirmed)="confirmSuspend()"
     (cancelled)="pendingSuspendUserId.set(null)" />
+
+  @if (facade.mutationError()) {
+    <app-dialog [open]="true" [titleText]="'common.errorTitle' | translate" size="sm" (closed)="facade.mutationError.set(null)">
+      <p>{{ 'common.errorDescription' | translate }}</p>
+      <div class="app-confirm-dialog__actions">
+        <app-button variant="primary" (click)="facade.mutationError.set(null)">{{ 'common.confirm' | translate }}</app-button>
+      </div>
+    </app-dialog>
+  }
 </section>