How to pay credit Memo in PPR

Hello Team -

We are having a credit memo with the amount of -100$ with the vendor_id= 730 & vendor_site_id= 1050208. The system looks for Standard Invoices for the same supplier, site, currency, and payment method and only one invoice is found with an invoice amount 20$ in this PPR for this same vendor and site. Therefore, only -20 has been paid from the credit memo.

However, I just wanted to know that we have to wait for more invoices to arrive at the vendor_site_id= 1050208, but I don’t know when it happens and when we have a credit balance in the liability of the vendor_site_id= 1050208 .