If you don't have an invoice that refers to the Prepayment and credit memo, you are going to have to create a debit memo and then apply the credit memo and prepayment to the debit memo to zero them out.

strtech,

Right theres no reference to these prepay and credit in the APPLY TO INV#. If I create a debit memo then this would show up in the report along with the prepay and credit, technically balancing the customer account to zero.

Can you tell me how would I apply the original prepayment and credit to the debit? I cannot find it in the Sales Order section because I thought of deleting the invoice itself but its no longer there.   

It is not possible nor advisable to delete an invoice, PP or credit memo. If the two balance each other out then you should do a zero dollar cash receipt and apply them both. Plus you should be posting on the Sage Community.

Thanks BigLouie, cash receiving the PP and CM solved the problem. By the way I don't see a SAGE forum, its just MAS 90 sage and Mas 500 sage. I'm using MAS 90.

community.sagemas.com

Free open forum for MAS users and resellers. Answers by power users, resellers and Sage tech support.