This is actually a linked table with a Microsoft Access front-end using ODBC, and in typical ODBC fashion, it gives an obscure error code that indicates the user does not have the permissions necessary to insert a record in that table. I didn't actually record the error number - sorry, and I should have also recorded the actual error message text, and I didn't do that either. Unfortunately the system is at a remote site where it is very difficult to try to replicate the problem and get the actual message, but I will do that if the steps suggested above don't resolve the issue. Thanks.