diff --git a/app/Http/Controllers/Repuve/PackageController.php b/app/Http/Controllers/Repuve/PackageController.php
index 2d708e8..0bb12be 100644
--- a/app/Http/Controllers/Repuve/PackageController.php
+++ b/app/Http/Controllers/Repuve/PackageController.php
@@ -56,7 +56,25 @@ public function store(PackageStoreRequest $request)
             $statusAvailable = CatalogTagStatus::where('code', 'available')->first();
 
             if (!$statusAvailable) {
-                throw new \Exception('No se encontró el status "available" para los tags');
+                throw new \Exception('No se encontró el status "Disponible" para los tags');
+            }
+
+            $existingTags = Tag::whereHas('package', function ($query) use ($request) {
+                $query->where('box_number', $request->box_number);
+            })
+                ->whereBetween('folio', [$request->starting_page, $request->ending_page])
+                ->get(['folio', 'package_id']);
+
+            if ($existingTags->isNotEmpty()) {
+                DB::rollBack();
+                return ApiResponse::BAD_REQUEST->response([
+                    'message' => 'Ya existen tags en esta caja con folios en el rango especificado.',
+                    'box_number' => $request->box_number,
+                    'starting_page' => $request->starting_page,
+                    'ending_page' => $request->ending_page,
+                    'folios_conflictivos' => $existingTags->pluck('folio')->toArray(),
+                    'total_folios_conflictivos' => $existingTags->count(),
+                ]);
             }
 
             // Crear los tags según el rango de páginas