diff --git a/api/app/Http/Controllers/Api/V1/FormBuilder/FormSubmissionActionFailureController.php b/api/app/Http/Controllers/Api/V1/FormBuilder/FormSubmissionActionFailureController.php
new file mode 100644
index 00000000..fe7f2228
--- /dev/null
+++ b/api/app/Http/Controllers/Api/V1/FormBuilder/FormSubmissionActionFailureController.php
@@ -0,0 +1,202 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Api\V1\FormBuilder;
+
+use App\Enums\FormBuilder\ApplyStatus;
+use App\Enums\FormBuilder\DismissalReasonType;
+use App\FormBuilder\Bindings\FormBindingApplicator;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\FormBuilder\DismissFailureRequest;
+use App\Http\Requests\FormBuilder\ResolveFailureRequest;
+use App\Http\Resources\FormBuilder\FormSubmissionActionFailureResource;
+use App\Models\FormBuilder\FormSubmission;
+use App\Models\FormBuilder\FormSubmissionActionFailure;
+use App\Models\Organisation;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Gate;
+use Throwable;
+
+/**
+ * RFC-WS-6 §3 (Q5) + §4 (V3) — admin endpoints for the binding-pipeline
+ * failure workflow. Two route groups in api.php (org-scoped + super_admin
+ * platform). Cross-tenant access returns 404, never 403, to prevent
+ * resource-existence enumeration.
+ */
+final class FormSubmissionActionFailureController extends Controller
+{
+    public function orgIndex(Organisation $organisation): AnonymousResourceCollection
+    {
+        Gate::authorize('viewAny', FormSubmissionActionFailure::class);
+
+        $failures = FormSubmissionActionFailure::query()
+            ->whereHas('submission', function ($q) use ($organisation): void {
+                /** @var \Illuminate\Database\Eloquent\Builder<FormSubmission> $q */
+                $q->where('organisation_id', $organisation->id);
+            })
+            ->latest('failed_at')
+            ->paginate(50);
+
+        return FormSubmissionActionFailureResource::collection($failures);
+    }
+
+    public function platformIndex(): AnonymousResourceCollection
+    {
+        Gate::authorize('viewAny', FormSubmissionActionFailure::class);
+
+        $failures = FormSubmissionActionFailure::query()
+            ->latest('failed_at')
+            ->paginate(50);
+
+        return FormSubmissionActionFailureResource::collection($failures);
+    }
+
+    public function show(\Illuminate\Http\Request $request): FormSubmissionActionFailureResource
+    {
+        $failure = $this->resolveFailure((string) $request->route('formSubmissionActionFailure'));
+        $this->authorizeOrNotFound('view', $failure);
+
+        return new FormSubmissionActionFailureResource($failure);
+    }
+
+    public function retry(\Illuminate\Http\Request $request, FormBindingApplicator $applicator): FormSubmissionActionFailureResource|JsonResponse
+    {
+        $failure = $this->resolveFailure((string) $request->route('formSubmissionActionFailure'));
+        $this->authorizeOrNotFound('retry', $failure);
+
+        if (! $failure->canBeRetried()) {
+            return response()->json([
+                'error' => 'cannot_retry',
+                'message' => 'Failure is dismissed; cannot retry.',
+            ], 422);
+        }
+
+        $submission = $failure->submission;
+        if ($submission === null) {
+            return response()->json([
+                'error' => 'submission_gone',
+                'message' => 'Parent submission has been deleted.',
+            ], 410);
+        }
+
+        try {
+            DB::transaction(function () use ($applicator, $submission): void {
+                $result = $applicator->apply($submission);
+                FormSubmission::query()
+                    ->whereKey($submission->id)
+                    ->update([
+                        'apply_status' => $result->applyStatus()->value,
+                        'apply_completed_at' => now(),
+                    ]);
+            });
+            $failure->retry_count = (int) $failure->retry_count + 1;
+            $failure->resolved_at = now();
+            $failure->save();
+        } catch (Throwable $e) {
+            DB::transaction(function () use ($failure, $submission, $e): void {
+                FormSubmissionActionFailure::query()->create([
+                    'form_submission_id' => $submission->id,
+                    'listener_class' => $failure->listener_class,
+                    'failed_at' => now(),
+                    'exception_class' => $e::class,
+                    'exception_message' => $e->getMessage(),
+                    'context' => ['retry_of' => (string) $failure->id],
+                ]);
+                FormSubmissionActionFailure::query()
+                    ->whereKey($failure->id)
+                    ->update(['retry_count' => (int) $failure->retry_count + 1]);
+                FormSubmission::query()
+                    ->whereKey($submission->id)
+                    ->update(['apply_status' => ApplyStatus::FAILED->value]);
+            });
+        }
+
+        return new FormSubmissionActionFailureResource($failure->refresh());
+    }
+
+    public function resolve(
+        ResolveFailureRequest $request,
+    ): FormSubmissionActionFailureResource|JsonResponse {
+        $failure = $this->resolveFailure((string) $request->route('formSubmissionActionFailure'));
+        $this->authorizeOrNotFound('resolve', $failure);
+
+        if ($failure->resolved_at !== null) {
+            return response()->json([
+                'error' => 'already_resolved',
+            ], 422);
+        }
+
+        if ($failure->dismissed_at !== null) {
+            return response()->json([
+                'error' => 'already_dismissed',
+            ], 422);
+        }
+
+        $failure->resolved_at = now();
+        $failure->resolved_note = $request->input('note');
+        $failure->resolved_by_user_id = $request->user()?->id;
+        $failure->save();
+
+        return new FormSubmissionActionFailureResource($failure->refresh());
+    }
+
+    public function dismiss(
+        DismissFailureRequest $request,
+    ): FormSubmissionActionFailureResource|JsonResponse {
+        $failure = $this->resolveFailure((string) $request->route('formSubmissionActionFailure'));
+        $this->authorizeOrNotFound('dismiss', $failure);
+
+        if ($failure->resolved_at !== null) {
+            return response()->json([
+                'error' => 'already_resolved',
+            ], 422);
+        }
+
+        if ($failure->dismissed_at !== null) {
+            return response()->json([
+                'error' => 'already_dismissed',
+            ], 422);
+        }
+
+        $failure->dismissed_at = now();
+        $failure->dismissed_reason_type = DismissalReasonType::from((string) $request->input('reason_type'));
+        $failure->dismissed_reason_note = $request->input('note');
+        $failure->dismissed_by_user_id = $request->user()?->id;
+        $failure->save();
+
+        return new FormSubmissionActionFailureResource($failure->refresh());
+    }
+
+    /**
+     * Manual model resolution. Implicit binding doesn't pick up nested-
+     * namespace ULID models reliably across nested route groups, so we
+     * load explicitly without global scopes (cross-tenant access reaches
+     * the policy, which then translates denied → 404 per RFC V3).
+     */
+    private function resolveFailure(string $id): FormSubmissionActionFailure
+    {
+        $failure = FormSubmissionActionFailure::query()
+            ->withoutGlobalScopes()
+            ->find($id);
+        if ($failure === null) {
+            throw new ModelNotFoundException();
+        }
+
+        return $failure;
+    }
+
+    /**
+     * Translate a denied policy to 404 (RFC V3) so cross-tenant access
+     * does NOT confirm resource existence.
+     */
+    private function authorizeOrNotFound(string $ability, FormSubmissionActionFailure $failure): void
+    {
+        if (Gate::denies($ability, $failure)) {
+            throw new ModelNotFoundException();
+        }
+    }
+}
diff --git a/api/app/Http/Requests/FormBuilder/DismissFailureRequest.php b/api/app/Http/Requests/FormBuilder/DismissFailureRequest.php
new file mode 100644
index 00000000..99dc47b2
--- /dev/null
+++ b/api/app/Http/Requests/FormBuilder/DismissFailureRequest.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\FormBuilder;
+
+use App\Enums\FormBuilder\DismissalReasonType;
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+final class DismissFailureRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'reason_type' => ['required', Rule::enum(DismissalReasonType::class)],
+            'note' => ['nullable', 'string', 'max:500'],
+        ];
+    }
+
+    public function withValidator(Validator $validator): void
+    {
+        $validator->after(function (Validator $v): void {
+            if ($v->errors()->isNotEmpty()) {
+                return;
+            }
+            $reason = DismissalReasonType::tryFrom((string) $this->input('reason_type'));
+            if ($reason === null) {
+                return;
+            }
+            if ($reason->requiresNote() && $this->input('note') === null) {
+                $v->errors()->add('note', __('form_builder.dismiss.note_required_for_other'));
+            }
+        });
+    }
+}
diff --git a/api/app/Http/Requests/FormBuilder/ResolveFailureRequest.php b/api/app/Http/Requests/FormBuilder/ResolveFailureRequest.php
new file mode 100644
index 00000000..6c1f029a
--- /dev/null
+++ b/api/app/Http/Requests/FormBuilder/ResolveFailureRequest.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\FormBuilder;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+final class ResolveFailureRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true; // policy enforced in controller via Gate::authorize
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        return [
+            'note' => ['nullable', 'string', 'max:65535'],
+        ];
+    }
+}
diff --git a/api/app/Http/Resources/FormBuilder/FormSubmissionActionFailureResource.php b/api/app/Http/Resources/FormBuilder/FormSubmissionActionFailureResource.php
new file mode 100644
index 00000000..afad008e
--- /dev/null
+++ b/api/app/Http/Resources/FormBuilder/FormSubmissionActionFailureResource.php
@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Resources\FormBuilder;
+
+use App\Models\FormBuilder\FormSubmissionActionFailure;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin FormSubmissionActionFailure
+ */
+final class FormSubmissionActionFailureResource extends JsonResource
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'form_submission_id' => $this->form_submission_id,
+            'binding_id' => $this->binding_id,
+            'listener_class' => $this->listener_class,
+            'failed_at' => $this->failed_at->toIso8601String(),
+            'exception_class' => $this->exception_class,
+            'exception_message' => $this->exception_message,
+            'context' => $this->context,
+            'retry_count' => $this->retry_count,
+            'resolved_at' => $this->resolved_at?->toIso8601String(),
+            'resolved_note' => $this->resolved_note,
+            'dismissed_at' => $this->dismissed_at?->toIso8601String(),
+            'dismissed_reason_type' => $this->dismissed_reason_type?->value,
+            'dismissed_reason_note' => $this->dismissed_reason_note,
+            'state' => match (true) {
+                $this->resolved_at !== null => 'resolved',
+                $this->dismissed_at !== null => 'dismissed',
+                default => 'open',
+            },
+        ];
+    }
+}
diff --git a/api/app/Policies/FormBuilder/FormSubmissionActionFailurePolicy.php b/api/app/Policies/FormBuilder/FormSubmissionActionFailurePolicy.php
index 7d2bc0fd..40f0085f 100644
--- a/api/app/Policies/FormBuilder/FormSubmissionActionFailurePolicy.php
+++ b/api/app/Policies/FormBuilder/FormSubmissionActionFailurePolicy.php
@@ -54,11 +54,19 @@ final class FormSubmissionActionFailurePolicy
 
     private function canAccess(User $user, FormSubmissionActionFailure $failure): bool
     {
-        $failure->loadMissing('submission');
-        $submission = $failure->submission;
+        // Load the submission without global scopes so cross-tenant
+        // resolution works for super_admin and so the policy itself
+        // does the tenant gating (RFC V3 — single source of truth for
+        // tenant resolution, not OrganisationScope).
+        $submission = \App\Models\FormBuilder\FormSubmission::query()
+            ->withoutGlobalScopes()
+            ->find($failure->form_submission_id);
         if ($submission === null) {
             return false; // parent submission deleted
         }
+        if ($submission->deleted_at !== null) {
+            return false; // soft-deleted parent — treat as gone
+        }
 
         $orgId = (string) $submission->organisation_id;
         if ($orgId === '') {
@@ -71,7 +79,9 @@ final class FormSubmissionActionFailurePolicy
 
         // Tenant scope: user must be an org_admin in the failure's
         // organisation. RFC V3 — IDOR-class FK-chain enforcement.
-        $organisation = $submission->organisation;
+        $organisation = \App\Models\Organisation::query()
+            ->withoutGlobalScopes()
+            ->find($orgId);
         if (! $organisation instanceof Organisation) {
             return false;
         }
diff --git a/api/app/Providers/AppServiceProvider.php b/api/app/Providers/AppServiceProvider.php
index c6be0adc..42cfe9d6 100644
--- a/api/app/Providers/AppServiceProvider.php
+++ b/api/app/Providers/AppServiceProvider.php
@@ -64,6 +64,7 @@ use App\Observers\UserObserver;
 use Illuminate\Auth\Notifications\ResetPassword;
 use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Support\ServiceProvider;
+use Illuminate\Support\Facades\Gate;
 use Spatie\Activitylog\Models\Activity;
 
 class AppServiceProvider extends ServiceProvider
@@ -120,6 +121,16 @@ class AppServiceProvider extends ServiceProvider
     {
         $this->registerMorphMap();
 
+        // RFC-WS-6 V3 — explicit policy registration. Laravel's auto-discovery
+        // doesn't reliably resolve nested-namespace models like
+        // App\Models\FormBuilder\FormSubmissionActionFailure to
+        // App\Policies\FormBuilder\FormSubmissionActionFailurePolicy.
+        Gate::policy(
+            \App\Models\FormBuilder\FormSubmissionActionFailure::class,
+            \App\Policies\FormBuilder\FormSubmissionActionFailurePolicy::class,
+        );
+
+
         Person::observe(PersonObserver::class);
         User::observe(UserObserver::class);
         FormValue::observe(FormValueObserver::class);
diff --git a/api/lang/nl/form_builder.php b/api/lang/nl/form_builder.php
new file mode 100644
index 00000000..96a8297a
--- /dev/null
+++ b/api/lang/nl/form_builder.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'dismiss' => [
+        'note_required_for_other' => 'Een toelichting is verplicht wanneer reden = "anders".',
+    ],
+];
diff --git a/api/routes/api.php b/api/routes/api.php
index 8a9e5bc9..31f9face 100644
--- a/api/routes/api.php
+++ b/api/routes/api.php
@@ -144,6 +144,13 @@ Route::prefix('admin')
         Route::get('impersonate/status', [AdminImpersonationController::class, 'status']);
         Route::post('impersonate/send-mfa-code', [AdminImpersonationController::class, 'sendMfaCode']);
         Route::post('impersonate/{user}', [AdminImpersonationController::class, 'start']);
+
+        // RFC-WS-6 §3 (Q5) — platform-wide form-failure admin endpoints.
+        Route::get('form-failures', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'platformIndex']);
+        Route::get('form-failures/{formSubmissionActionFailure}', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'show']);
+        Route::post('form-failures/{formSubmissionActionFailure}/retry', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'retry']);
+        Route::post('form-failures/{formSubmissionActionFailure}/resolve', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'resolve']);
+        Route::post('form-failures/{formSubmissionActionFailure}/dismiss', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'dismiss']);
     });
 
 // Protected routes
@@ -235,6 +242,13 @@ Route::middleware(['auth:sanctum', 'impersonation'])->group(function () {
         // Email logs (read-only)
         Route::get('email-logs', [EmailLogController::class, 'index']);
 
+        // RFC-WS-6 §3 (Q5) — org-scoped form-failure admin endpoints.
+        Route::get('form-failures', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'orgIndex']);
+        Route::get('form-failures/{formSubmissionActionFailure}', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'show']);
+        Route::post('form-failures/{formSubmissionActionFailure}/retry', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'retry']);
+        Route::post('form-failures/{formSubmissionActionFailure}/resolve', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'resolve']);
+        Route::post('form-failures/{formSubmissionActionFailure}/dismiss', [\App\Http\Controllers\Api\V1\FormBuilder\FormSubmissionActionFailureController::class, 'dismiss']);
+
         // Person tags (organisation settings)
         Route::apiResource('person-tags', PersonTagController::class)
             ->except(['show']);
diff --git a/api/tests/Feature/FormBuilder/Api/FormSubmissionActionFailureControllerTest.php b/api/tests/Feature/FormBuilder/Api/FormSubmissionActionFailureControllerTest.php
new file mode 100644
index 00000000..2bc29f4d
--- /dev/null
+++ b/api/tests/Feature/FormBuilder/Api/FormSubmissionActionFailureControllerTest.php
@@ -0,0 +1,147 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature\FormBuilder\Api;
+
+use App\Enums\FormBuilder\DismissalReasonType;
+use App\Models\FormBuilder\FormSchema;
+use App\Models\FormBuilder\FormSubmission;
+use App\Models\FormBuilder\FormSubmissionActionFailure;
+use App\Models\Organisation;
+use App\Models\User;
+use Database\Seeders\RoleSeeder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Laravel\Sanctum\Sanctum;
+use Tests\TestCase;
+
+/**
+ * RFC-WS-6 §3 (Q5) + §4 (V3) — admin endpoints. Cross-tenant access
+ * MUST return 404, never 403, to prevent enumeration. The IDOR-class
+ * tests below assert this contract explicitly.
+ */
+final class FormSubmissionActionFailureControllerTest extends TestCase
+{
+    use RefreshDatabase;
+
+    private Organisation $orgA;
+
+    private Organisation $orgB;
+
+    private User $superAdmin;
+
+    private User $orgAdminA;
+
+    private User $orgAdminB;
+
+    private FormSubmissionActionFailure $failureInOrgA;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->seed(RoleSeeder::class);
+
+        $this->orgA = Organisation::factory()->create();
+        $this->orgB = Organisation::factory()->create();
+
+        $this->superAdmin = User::factory()->create();
+        $this->superAdmin->assignRole('super_admin');
+
+        $this->orgAdminA = User::factory()->create();
+        $this->orgA->users()->attach($this->orgAdminA, ['role' => 'org_admin']);
+
+        $this->orgAdminB = User::factory()->create();
+        $this->orgB->users()->attach($this->orgAdminB, ['role' => 'org_admin']);
+
+        $schema = FormSchema::factory()->create(['organisation_id' => $this->orgA->id]);
+        $submission = FormSubmission::factory()->create([
+            'form_schema_id' => $schema->id,
+            'organisation_id' => $this->orgA->id,
+        ]);
+        $this->failureInOrgA = FormSubmissionActionFailure::factory()
+            ->for($submission, 'submission')
+            ->create();
+    }
+
+    public function test_unauthenticated_returns_401(): void
+    {
+        $this->getJson("/api/v1/admin/form-failures/{$this->failureInOrgA->id}")
+            ->assertStatus(401);
+    }
+
+    public function test_super_admin_can_view_failure(): void
+    {
+        $this->withoutExceptionHandling();
+        Sanctum::actingAs($this->superAdmin); $this
+            ->getJson("/api/v1/admin/form-failures/{$this->failureInOrgA->id}")
+            ->assertOk()
+            ->assertJsonPath('data.id', (string) $this->failureInOrgA->id);
+    }
+
+    public function test_org_admin_can_view_own_org_failure(): void
+    {
+        Sanctum::actingAs($this->orgAdminA);
+        $this->getJson("/api/v1/organisations/{$this->orgA->id}/form-failures/{$this->failureInOrgA->id}")
+            ->assertOk();
+    }
+
+    /**
+     * RFC V3 IDOR-class — admin from org B must NOT see a failure
+     * whose submission belongs to org A. 404, NOT 403.
+     */
+    public function test_cross_tenant_access_returns_404_not_403(): void
+    {
+        Sanctum::actingAs($this->orgAdminB); $this
+            ->getJson("/api/v1/organisations/{$this->orgA->id}/form-failures/{$this->failureInOrgA->id}")
+            ->assertStatus(404);
+    }
+
+    public function test_resolve_endpoint_with_note(): void
+    {
+        Sanctum::actingAs($this->superAdmin); $this
+            ->postJson("/api/v1/admin/form-failures/{$this->failureInOrgA->id}/resolve", [
+                'note' => 'fixed via direct edit',
+            ])
+            ->assertOk()
+            ->assertJsonPath('data.state', 'resolved')
+            ->assertJsonPath('data.resolved_note', 'fixed via direct edit');
+    }
+
+    public function test_dismiss_endpoint_with_enum_reason(): void
+    {
+        Sanctum::actingAs($this->superAdmin); $this
+            ->postJson("/api/v1/admin/form-failures/{$this->failureInOrgA->id}/dismiss", [
+                'reason_type' => DismissalReasonType::SCHEMA_DELETED->value,
+            ])
+            ->assertOk()
+            ->assertJsonPath('data.state', 'dismissed')
+            ->assertJsonPath('data.dismissed_reason_type', DismissalReasonType::SCHEMA_DELETED->value);
+    }
+
+    public function test_dismiss_other_without_note_fails_422(): void
+    {
+        Sanctum::actingAs($this->superAdmin); $this
+            ->postJson("/api/v1/admin/form-failures/{$this->failureInOrgA->id}/dismiss", [
+                'reason_type' => DismissalReasonType::OTHER->value,
+            ])
+            ->assertStatus(422)
+            ->assertJsonValidationErrors(['note']);
+    }
+
+    public function test_cross_tenant_dismiss_returns_404(): void
+    {
+        Sanctum::actingAs($this->orgAdminB); $this
+            ->postJson("/api/v1/organisations/{$this->orgA->id}/form-failures/{$this->failureInOrgA->id}/dismiss", [
+                'reason_type' => DismissalReasonType::OTHER->value,
+                'note' => 'evil',
+            ])
+            ->assertStatus(404);
+    }
+
+    public function test_cross_tenant_resolve_returns_404(): void
+    {
+        Sanctum::actingAs($this->orgAdminB); $this
+            ->postJson("/api/v1/organisations/{$this->orgA->id}/form-failures/{$this->failureInOrgA->id}/resolve", [])
+            ->assertStatus(404);
+    }
+}