Hi Allan,
I never encountered that, but it sounds like the table is corrupted. Try to generate script for this table and see if it's okey. If it's, drop the table and recreate it from the script.

>Hi Sergey,
>
>I didn't specify a default value. When I try to set the default value to 0, I get the following error message:
>
>

>'InvoiceHeader' table
>- Unable to modify table.
>ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]
Type ??meric is not a defined system type.
>
>

>
>
>>Hi Allan
>>
>>You cannot add field with NO NULLS attribute w/o default value. What's default value for that column?
>>
< snip >