diff --git a/internal/proto/analytics/connections_log.proto b/internal/proto/analytics/connections_log.proto
index b82532eb..6129460e 100644
--- a/internal/proto/analytics/connections_log.proto
+++ b/internal/proto/analytics/connections_log.proto
@@ -340,7 +340,7 @@ message ConnectionsLog {
     optional string connection_token = 8;
   }
 
-  // Next Id: 17
+  // Next Id: 18
   message ErrorCode {
     // The direction (incoming vs outgoing) of this error.
     optional location.nearby.proto.connections.ConnectionAttemptDirection
@@ -372,6 +372,7 @@ message ConnectionsLog {
           stop_listening_incoming_connection_error = 13;
       location.nearby.errorcode.proto.ConnectError connect_error = 14;
       location.nearby.errorcode.proto.DisconnectError disconnect_error = 15;
+      location.nearby.errorcode.proto.SendPayloadError send_payload_error = 17;
     }
 
     // The token use to identify this established connection.
diff --git a/proto/errorcode/error_code_enums.proto b/proto/errorcode/error_code_enums.proto
index 6bce2d92..99409b7e 100644
--- a/proto/errorcode/error_code_enums.proto
+++ b/proto/errorcode/error_code_enums.proto
@@ -327,6 +327,17 @@ enum DisconnectError {
   // Next ID :33
 }
 
+// The error for event SEND_PAYLOAD. The range between 31 and 99.
+enum SendPayloadError {
+  // The default value for clearcut
+  UNKNOWN_SEND_PAYLOAD_ERROR = 31;
+
+  // Network error, failed to send payload.
+  SEND_PAYLOAD_FAILED = 32;
+
+  // Next ID :33
+}
+
 enum Description {
   reserved 28, 29;
 
@@ -503,4 +514,6 @@ enum Description {
   USER_RESTRICTION_DISALLOWED = 172;
   UNSUPPORTED_DEVICE_TYPE_PHONE = 173;
   UNSUPPORTED_DEVICE_TYPE_TABLET = 174;
+  BROKEN_PIPE = 175;
+  CONNECTION_ABORT = 176;
 }