I have already been through the help, tested several alternatives, and talked to Sage tech support. This doesn't make sense. You enter a manual check, make up an invoice starting with ""PP"", then select a GL account to debit (I chose ""Prepaid Inventory""). Update the check register and an invoice with a 0 balance posts to the vendor aging. Right away we have an AP aging that doesn't tie out to the AP GL account. The next step is to enter the vendor invoice when it arrives (debits inventory credits AP). Finally, in AP invoice data entry, enter the vendor invoice (message appears ""it already exists). Click ""Adjust"" then go to lines and select the 0 balance prepaid invoice. The GL entries ""wash"" out correctly in the end. Here's the problema(s): 1. The AP aging never ties to the AP GL account (before the vendor invoice is entered and the prepayment applied to the vendor invoice). Theoretically you should be able to net the prepaid Inventory account with the AP and it should tie out. That is if someone didn't accidently select a different account number to apply the initial prepayment to. 2. There is no visibility. You could print an aging for a vendor that has $1M in invoices, yet no prepayments show up on the aging. You could have another $1M in prepayments so the balance should be $0! Either I am missing something or this is a complete mess.