diff --git a/apps/api/src/services/sat/sat.service.ts b/apps/api/src/services/sat/sat.service.ts
index be34242..c6d047b 100644
--- a/apps/api/src/services/sat/sat.service.ts
+++ b/apps/api/src/services/sat/sat.service.ts
@@ -13,7 +13,7 @@ import type { Service } from '@nodecfdi/sat-ws-descarga-masiva';
 
 const POLL_INTERVAL_MS = 30000; // 30 segundos
 const MAX_POLL_ATTEMPTS = 60; // 30 minutos máximo
-const YEARS_TO_SYNC = 10;
+const YEARS_TO_SYNC = 6; // SAT solo permite descargar últimos 6 años
 
 interface SyncContext {
   fielData: FielData;