Broker:Message Undeliverable Event Class
Applies to: 
SQL Server
Azure SQL Managed Instance
SQL Server generates a Broker:Message Undeliverable event when Service Broker is unable to retain a received message that should have been delivered to a service in this instance. For messages that should have been forwarded, see Broker:Forwarded Message Dropped Event Class.
Broker:Message Undeliverable Event Class Data Columns
| Data column | Type | Description | Column number | Filterable |
|---|---|---|---|---|
| Application Name | nvarchar | The name of the client application that created the connection to an instance of SQL Server. This column is populated with the values passed by the application rather than the displayed name of the program. | 10 | Yes |
| BigintData1 | bigint | The sequence number of the undeliverable message. | 52 | No |
| BigintData2 | bigint | The sequence number of the last message successfully acknowledged. | 53 | No |
| ClientProcessID | int | The ID assigned by the host computer to the process where the client application is running. This data column is populated if the client process ID is provided by the client. | 9 | Yes |
| DatabaseID | int | The ID of the database specified by the USE database statement, or the ID of the default database if no USE database statement has been issued for a given instance. SQL Server Profiler displays the name of the database if the ServerName data column is captured in the trace and the server is available. Determine the value for a database by using the DB_ID function. | 3 | Yes |
| Error | int | The message id number in sys.messages for the text in the event. | 31 | No |
| EventClass | int | The type of event class captured. Always 160 for Broker:MessageUndeliverable. | 27 | No |
| EventSequence | int | Sequence number for this event. | 51 | No |
| EventSubClass | nvarchar | Indicates whether the undeliverable message was a sequenced message. One of two values: Sequenced Message. The undeliverable message was a sequenced message. Unsequenced Message. The undeliverable message was not a sequenced message. |
21 | Yes |
| GUID | uniqueidentifier | The conversation ID of the conversation that the undeliverable message belongs to. This identifier is transmitted as part of the message, and is shared between both sides of the conversation. | 54 | No |
| HostName | nvarchar | The name of the computer on which the client is running. This data column is populated if the host name is provided by the client. To determine the host name, use the HOST_NAME function. | 8 | Yes |
| IntegerData | int | The fragment number of the undeliverable message. | 25 | No |
| IntegerData2 | int | The message fragment number that the undeliverable message was acknowledging. | 55 | No |
| IsSystem | int | Indicates whether the event occurred on a system process or a user process. 1 = system, 0 = user. | 60 | No |
| LoginName | nvarchar | The name of the login of the user (either SQL Server security login or the Windows login credentials in the form of DOMAIN\Username). | 11 | No |
| LoginSid | image | The security identification number (SID) of the logged-in user. Each SID is unique for each login in the server. | 41 | Yes |
| NTDomainName | nvarchar | The Windows domain to which the user belongs. | 7 | Yes |
| NTUserName | nvarchar | The name of the user that owns the connection that generated this event. | 6 | Yes |
| ObjectName | nvarchar | The conversation handle of the dialog. | 34 | No |
| RoleName | nvarchar | The role of the conversation handle. This is either initiator or target. | 38 | No |
| ServerName | nvarchar | The name of the instance of SQL Server being traced. | 26 | No |
| Severity | int | Severity number for the text in the event. | 29 | No |
| SPID | int | The server process ID assigned by SQL Server to the process associated with the client. | 12 | Yes |
| StartTime | datetime | The time at which the event started, when available. | 14 | Yes |
| State | int | Indicates the location within the SQL Server source code that produced the event. Each location that may produce this event has a different state code. A Microsoft support engineer can use this state code to find where the event was produced.. | 30 | No |
| TextData | ntext | The reason that SQL Server could not deliver the message. | 1 | Yes |
| TransactionID | bigint | The system-assigned ID of the transaction. | 4 | No |