diff --git a/api/current.txt b/api/current.txt
index 01aa843..3b896a7 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -36318,6 +36318,7 @@
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
     field public static final int CAPABILITY_SUPPORT_HOLD = 2; // 0x2
     field public static final int CAPABILITY_SWAP_CONFERENCE = 8; // 0x8
+    field public static final java.lang.String EVENT_CALL_MERGE_FAILED = "android.telecom.event.CALL_MERGE_FAILED";
     field public static final java.lang.String EVENT_CALL_PULL_FAILED = "android.telecom.event.CALL_PULL_FAILED";
     field public static final java.lang.String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
     field public static final java.lang.String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
diff --git a/api/system-current.txt b/api/system-current.txt
index c18b916..90dac04 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -39165,6 +39165,7 @@
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
     field public static final int CAPABILITY_SUPPORT_HOLD = 2; // 0x2
     field public static final int CAPABILITY_SWAP_CONFERENCE = 8; // 0x8
+    field public static final java.lang.String EVENT_CALL_MERGE_FAILED = "android.telecom.event.CALL_MERGE_FAILED";
     field public static final java.lang.String EVENT_CALL_PULL_FAILED = "android.telecom.event.CALL_PULL_FAILED";
     field public static final java.lang.String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
     field public static final java.lang.String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
diff --git a/api/test-current.txt b/api/test-current.txt
index 7de82b3..c7d0b07 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -36396,6 +36396,7 @@
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
     field public static final int CAPABILITY_SUPPORT_HOLD = 2; // 0x2
     field public static final int CAPABILITY_SWAP_CONFERENCE = 8; // 0x8
+    field public static final java.lang.String EVENT_CALL_MERGE_FAILED = "android.telecom.event.CALL_MERGE_FAILED";
     field public static final java.lang.String EVENT_CALL_PULL_FAILED = "android.telecom.event.CALL_PULL_FAILED";
     field public static final java.lang.String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
     field public static final java.lang.String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index a5e3c461..20e1715a 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -392,6 +392,12 @@
      */
     public static final String EVENT_CALL_PULL_FAILED = "android.telecom.event.CALL_PULL_FAILED";
 
+    /**
+     * Connection event used to inform {@link InCallService}s when the merging of two calls has
+     * failed. The User Interface should use this message to inform the user of the error.
+     */
+    public static final String EVENT_CALL_MERGE_FAILED = "android.telecom.event.CALL_MERGE_FAILED";
+
     // Flag controlling whether PII is emitted into the logs
     private static final boolean PII_DEBUG = Log.isLoggable(android.util.Log.DEBUG);