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Applies to: 
SQL Server
Details
| Attribute | Value |
|---|---|
| Product Name | SQL Server |
| Event ID | 8443 |
| Event Source | MSSQLSERVER |
| Component | SQLEngine |
| Symbolic Name | SB_DIALOG_WO_CONV_GROUP |
| Message Text | The conversation with ID '%.*ls' and initiator %d references a missing conversation group '%.*ls'. Run DBCC CHECKDB to analyze and repair the database. |
Explanation
The metadata layer returned NULL for the conversation group. The database has been corrupted in some way. One possible source of corruption is a disk error.
User Action
Run DBCC CHECKDB in repair mode to bring the database back into a consistent state. It may delete messages if necessary to restore consistency. Investigate system error logs to see if this error was caused by another failure in the system.