Click No and this tax id number is allowed.
 

This message is there to act as a warning so that you know to double check the SSN and make sure it is valid. In older versions of FundWare, this message was received every time the employee record was opened. In newer versions of FundWare (7.31 and above), once the employee's record is saved, this message is not received again.

The message will not cause any problems with payroll processing, or with W2's.