Paid A/P down payment request is not visible in payment window

Hi,

SAP B1 8.81 PL 06

My customer has created a down payment request and had made the payment in full

He has created A/P invoice without down payment by mistake

Now if we go to outgoing payment the paid down payment request is not showing up

What to do in this case as i cannot reconcile the D/P by using internal reconcilliation

Thanks

Md.nazeer Shaikh