diff --git a/interfaces/inner_api/device_auth_defines.h b/interfaces/inner_api/device_auth_defines.h
index c9bbc134..881ce418 100644
--- a/interfaces/inner_api/device_auth_defines.h
+++ b/interfaces/inner_api/device_auth_defines.h
@@ -225,6 +225,22 @@ enum {
     BAD_PAYLOAD = 0xF000000B,                                             // -268435445
     ALGORITHM_UNSUPPORTED = 0xF000000C,                                   // -268435444
     PROOF_MISMATCH = 0xF000000D,                                          // -268435443
+
+    /* error code used on DAS service for peer error */
+    PEER_ERROR_MASK = 0x0F000000,                                         // 251658240
+    PEER_INVALID_PARAMETERS = 0xFF000001,                                 // -16777214
+    PEER_EXCEED_AUTHORITY = 0xFF000002,                                   // -16777213
+    PEER_TIMEOUT = 0xFF000003,                                            // -16777212
+    PEER_NOT_REGISTERED = 0xFF000004,                                     // -16777211
+    PEER_NOT_TRUST_PEER = 0xFF000005,                                     // -16777210
+    PEER_NOT_TRUST_CONTROLLER = 0xFF000006,                               // -16777209
+    PEER_NOT_TRUST_ACCESSORY = 0xFF000007,                                // -16777208
+    PEER_OVER_MAX_TRUST_NUM = 0xFF000008,                                 // -16777207
+    PEER_CONNECTION_INTERRUPTED = 0xFF000009,                             // -16777206
+    PEER_UNSUPPORTED_VERSION = 0xFF00000A,                                // -16777205
+    PEER_BAD_PAYLOAD = 0xFF00000B,                                        // -16777204
+    PEER_ALGORITHM_UNSUPPORTED = 0xFF00000C,                              // -16777203
+    PEER_PROOF_MISMATCH = 0xFF00000D,                                     // -16777202
 };
 
 #endif
diff --git a/services/legacy/authenticators/src/account_unrelated/das_task_main.c b/services/legacy/authenticators/src/account_unrelated/das_task_main.c
index e098aadf..c8a31cea 100644
--- a/services/legacy/authenticators/src/account_unrelated/das_task_main.c
+++ b/services/legacy/authenticators/src/account_unrelated/das_task_main.c
@@ -240,7 +240,7 @@ static int ProcessTaskT(Task *task, const CJson *in, CJson *out, int32_t *status
     int32_t res;
     if (IsPeerErrMessage(in, &res)) {
         LOGE("Receive error message from peer, errCode: %" LOG_PUB "x.", res);
-        DasSendErrMsgToSelf(out, HC_ERR_PEER_ERROR);
+        DasSendErrMsgToSelf(out, res | PEER_ERROR_MASK);
         return HC_ERR_PEER_ERROR;
     }
     if (task->vec.size(&(task->vec)) == 0) {