[GNC] How to apply Over Payments or Pre-Payments to a Different Invoice

[L. D. James]

The Gnucash Business Features, Chapter 7.6.1, says you can use the 
residual when paying the next invoice.

Can someone provide the actual steps to properly do this?  I'm sure the 
resolution is in the wording on the page which says:

"Payment for the total amount received. GnuCash will then keep track of 
the over-payment (or pre-payment) in the A/R account and you can use the 
residual when paying the next invoice."

When I perform the "Process Payment" step it's not obvious to me which 
Transfer Account to use.  When I process the payment, it increases 
assets, whereas it appears that assets should remain the same since I'm 
not taking in more money, just using the funds from the client's account 
to have the invoice paid.

Thanks in advance if someone would help me in clarifying the specific 
steps for this and still have the books properly retain the accounts intact.

Also, I'm looking for the proper way to show when the Pre-Payment is 
used up.  In the case where the Pre-Payment amount is more than the next 
couple of invoices.  How to tell the balance of the Pre-Payment.

-- L. James

-- 
L. D. James
ljames at apollo3.com
www.apollo3.com/~ljames