Automatic Payment - Tcode F110

Hi all

In Automatic Payment, (F110)

when i do the payment proposal creation, and run the log the following error is found:

"Internal error: doc.balance not zero / comp.code xxxx vendor 999999 customer

Balances: 0.00 ZAR / 0.00 ZAR

Balances: 75.00 / 0.00"

Can you plese help..

Points will be awarded fo useful answers.