How do I identify the specific column causing the error?

Use the `sp_help` stored procedure or the `sys.dm_db_index_usage_stats` dynamic management view to find the offending column. `sp_help` provides general information about the table and its columns. `sys.dm_db_index_usage_stats` can help pinpoint which index is causing the constraint violation, which can lead you to the problematic column. Examine the error message closely for the column name.