R12 - Advance received from Supplier and then Knock-Off with the Standard Invoice

Hi Experts, I need to capture the following business scenario:

Advance received from Supplier in our bank (DR. BANK CR. LIABILITY). After that, at the time of entering invoice, I need to knock-off the liability booked at the time of recording advance.

Following is the approach through which It can be handled but I am looking for the solution how to knock-off LIABILITY booked at the time of booking advance.

1 - Advance received from Supplier, say amount of 100.

DR-BANK-100

CR-ADVANCE FROM SUPPLIER (LIABILITY ACCOUNT)-100

2 - When Invoice received from Supplier enter it as Standard Invoice, book expense as 500 but need to adjust the liability at this level that I had booked at step-1