ok so we have a customer from whom we also purchase some stuff. So they invoice us.

Now I have linked the Customer + Vendor as seen below:

Now We have received a payment with adjusted amount for. For the sake of simplification, Lets say we have received a payment of ₹12,790.95 (total outstanding receivables - payables)

Now how do I add this transaction in my books?

When I try to enter it as "payment received" I can not link it to the bill (₹3,328) & I can not match the invoice amounts without accounting for that bill.

I tried creating Customer Advance and tried to link it somehow but still I can't.

How do I record this transaction?