If you see the message, "You must specify a Tax ID # for each selected vendor."

This message indicates that you haven't entered a tax ID # in the Card Information window for one or more of the vendors whose 1099 you're trying to print.

To enter a tax ID #, click the zoom arrow next to the vendor's name in the Review 1099 Forms Before Printing window to open the 1099 Vendor Information window; enter the number in the Tax ID # field. When you do this, the number is also entered automatically in the Buying Details view of the Card Information window.