diff --git a/src/Operations/operations.services.ts b/src/Operations/operations.services.ts
index 1816cb1..ae01e7a 100644
--- a/src/Operations/operations.services.ts
+++ b/src/Operations/operations.services.ts
@@ -41,6 +41,7 @@ export class OperationsService {
 
       const user = await this.userService.findOne(id_usuario);
       const alum = await this.alumnoService.findOne(id_cuenta);
+      const periodo = await this.periodoService.getPeriodoActivo();
 
       const detalleData = {
         servicio: id_servicio,
@@ -49,6 +50,7 @@ export class OperationsService {
         monto,
         fecha_operacion: new Date(),
         numero_hojas,
+        periodo,
       };
 
       await this.detalleServicioService.Create(