If the customer pays less than the invoice and you decide not to pursue the difference, create a credit memo posting to a sales discount income account and apply the credit memo to the invoice
If you are asking how to match payment/receipts to purchase/expense bills, there is a "MATCH" option to link both. Both transactions will be matched and remaining if any will be shown as balance amount for the same account.
If you are asking how to match payment/receipts to purchase/expense bills, there is a "MATCH" option to link both. Both transactions will be matched and remaining if any will be shown as balance amount for the same account.
