diff --git a/proto/sharing_enums.proto b/proto/sharing_enums.proto
index eac4b63e..bd99d73b 100644
--- a/proto/sharing_enums.proto
+++ b/proto/sharing_enums.proto
@@ -283,6 +283,11 @@ enum EstablishConnectionStatus {
   CONNECTION_STATUS_SUCCESS = 1;
   CONNECTION_STATUS_FAILURE = 2;
   CONNECTION_STATUS_CANCELLATION = 3;
+  CONNECTION_STATUS_MEDIA_UNAVAILABLE_ATTACHMENT = 4;
+  CONNECTION_STATUS_FAILED_PAIRED_KEYHANDSHAKE = 5;
+  CONNECTION_STATUS_FAILED_WRITE_INTRODUCTION = 6;
+  CONNECTION_STATUS_FAILED_NULL_CONNECTION = 7;
+  CONNECTION_STATUS_FAILED_NO_TRANSFER_UPDATE_CALLBACK = 8;
 }
 
 // The status of sending and receiving attachments. Used by SEND_ATTACHMENTS.
@@ -293,22 +298,22 @@ enum AttachmentTransmissionStatus {
   CANCELED_ATTACHMENT_TRANSMISSION_STATUS = 2;
   FAILED_ATTACHMENT_TRANSMISSION_STATUS = 3;
 
-  REJECTED_ATTACHMENT = 4;
-  TIMED_OUT_ATTACHMENT = 5;
+  REJECTED_ATTACHMENT = 4 [deprecated = true];
+  TIMED_OUT_ATTACHMENT = 5 [deprecated = true];
   AWAITING_REMOTE_ACCEPTANCE_FAILED_ATTACHMENT = 6 [deprecated = true];
-  NOT_ENOUGH_SPACE_ATTACHMENT = 7;
-  FAILED_NO_TRANSFER_UPDATE_CALLBACK = 8;
-  MEDIA_UNAVAILABLE_ATTACHMENT = 9;
-  UNSUPPORTED_ATTACHMENT_TYPE_ATTACHMENT = 10;
-  NO_ATTACHMENT_FOUND = 11;
-  FAILED_NO_SHARE_TARGET_ENDPOINT = 12;
-  FAILED_PAIRED_KEYHANDSHAKE = 13;
-  FAILED_NULL_CONNECTION = 14;
-  FAILED_NO_PAYLOAD = 15;
-  FAILED_WRITE_INTRODUCTION = 16;
+  NOT_ENOUGH_SPACE_ATTACHMENT = 7 [deprecated = true];
+  FAILED_NO_TRANSFER_UPDATE_CALLBACK = 8 [deprecated = true];
+  MEDIA_UNAVAILABLE_ATTACHMENT = 9 [deprecated = true];
+  UNSUPPORTED_ATTACHMENT_TYPE_ATTACHMENT = 10 [deprecated = true];
+  NO_ATTACHMENT_FOUND = 11 [deprecated = true];
+  FAILED_NO_SHARE_TARGET_ENDPOINT = 12 [deprecated = true];
+  FAILED_PAIRED_KEYHANDSHAKE = 13 [deprecated = true];
+  FAILED_NULL_CONNECTION = 14 [deprecated = true];
+  FAILED_NO_PAYLOAD = 15 [deprecated = true];
+  FAILED_WRITE_INTRODUCTION = 16 [deprecated = true];
 
   // The remote response is either missing or has an unknown type.
-  FAILED_UNKNOWN_REMOTE_RESPONSE = 17;
+  FAILED_UNKNOWN_REMOTE_RESPONSE = 17 [deprecated = true];
 
   // Breakdowns of FAILED_NULL_CONNECTION (Desktop side)
   FAILED_NULL_CONNECTION_INIT_OUTGOING = 18;
@@ -317,9 +322,21 @@ enum AttachmentTransmissionStatus {
   // Breakdowns of FAILED_NULL_CONNECTION (android side)
   // Connection failed due to Wifi is disconnected or Bluetooth setting is off
   // or user turn on airplane mode.
-  FAILED_NULL_CONNECTION_LOST_CONNECTIVITY = 20;
+  FAILED_NULL_CONNECTION_LOST_CONNECTIVITY = 20 [deprecated = true];
   // Unexpected connection failure.
-  FAILED_NULL_CONNECTION_FAILURE = 21;
+  FAILED_NULL_CONNECTION_FAILURE = 21 [deprecated = true];
+
+  REJECTED_ATTACHMENT_TRANSMISSION_STATUS = 22;
+  TIMED_OUT_ATTACHMENT_TRANSMISSION_STATUS = 23;
+  NOT_ENOUGH_SPACE_ATTACHMENT_TRANSMISSION_STATUS = 24;
+  UNSUPPORTED_ATTACHMENT_TYPE_ATTACHMENT_TRANSMISSION_STATUS = 25;
+  FAILED_UNKNOWN_REMOTE_RESPONSE_TRANSMISSION_STATUS = 26;
+  // Connection failed due to Wifi is disconnected or Bluetooth setting is off
+  // or user turn on airplane mode.
+  NO_RESPONSE_FRAME_CONNECTION_CLOSED_LOST_CONNECTIVITY_TRANSMISSION_STATUS =
+      27;
+  // Unexpected connection failure due to no response frame.
+  NO_RESPONSE_FRAME_CONNECTION_CLOSED_TRANSMISSION_STATUS = 28;
 }
 
 // Generic result status of NearbyConnections API calls.