10000160 
Message
Vendor is subject to 1099 regulations and therefore a federal tax ID is required. Do you want to enter a federal tax ID?
Diagnosis
In the Business Partner Master Data window, you have tried to add a new vendor-type business partner or update an existing vendor-type business partner. On the Accounting tab, on the General subtab, you have selected the 1099 Form and 1099 Box options.
Procedure
Do one of the following:
To add a new business partner or update an existing one without entering a Federal Tax ID number, choose No.
To enter a Federal Tax ID number for the business partner, choose Yes.
Note
End of the note.
If you choose No and do not enter a Federal Tax ID number, when you generate a 1099 or 1096 form, the vendor Tax ID column is blank.