Need a solution for the following business scenario.

Need a solution for the following business scenario.

1) First, business will create prepayment and make the payment for that. Just by mentioning the PO number as description at the invoice level as reference.

2)Business will create standard invoice and matched to the PO and validate the invoice.

3) Business will create Debit Memo with line description as PO number for the amounts that to be adjusted on the prepayment.