diff --git a/interfaces/innerkits/samgr_proxy/include/system_ability_definition.h b/interfaces/innerkits/samgr_proxy/include/system_ability_definition.h
index c623d91bde2640e5b5088db892c5f3d7fde4f89d..3c72bf3911327c39d432bfd0a881ec8df269d62a 100644
--- a/interfaces/innerkits/samgr_proxy/include/system_ability_definition.h
+++ b/interfaces/innerkits/samgr_proxy/include/system_ability_definition.h
@@ -230,6 +230,7 @@ enum {
     SUBSYS_FILEMANAGEMENT_SYS_ABILITY_ID_BEGIN       = 5200,
     FILEMANAGEMENT_DISTRIBUTED_FILE_DAEMON_SA_ID     = 5201,
     FILEMANAGEMENT_DISTRIBUTED_FILE_SERVICE_SA_ID    = 5202,
+    FILEMANAGEMENT_BACKUP_SERVICE_SA_ID              = 5203,
     DISTRIBUTED_DEVICE_PROFILE_SA_ID                 = 6001,
     SUBSYS_ACE_SYS_ABILITY_ID_BEGIN                  = 7001,
     CA_DAEMON_ID                                     = 8001,