The deletion would have caused a rule violation and thus couldn't be completed.Error 3156
Using ODBC (Open Database Connectivity), you tried to delete data from an SQL database and that deletion couldn't be completed.
Possible causes:
The deletion would have caused a rule violation and thus couldn't be completed.
The SQL database is read-only, or you don't have permission to delete data in that database. Resolve the read-only condition, or see your system administrator or the person who created the database to obtain the necessary permissions.
The SQL database is on a network drive and the network isn't connected. Check to make sure the network is available, and then try the operation again.