Let me explain about 1099 mapping, Ralphd1.

You're unable to select Accounts Payable. You can select the accounts you used when entering the bill or paying the vendor. 

Once done mapping the accounts or categorizing the payments, you can now go ahead and file the 1099 form.

Reach out to us if you have additional questions. Just drop a comment below and we'll get back to you as soon as we can.