InvoiceASAP currently does not support credit memos.
But there is a workaround when an invoice is paid in full on QuickBooks with a Credit Memo.
In the invoice is partially paid with a Credit Memo, then we do not have a workaround for you.
But if you apply a Credit Memo to an invoice that pays the invoice in full, then this workaround should work for you.
In InvoiceASAP, mark the invoice as paid with a Check or Card or Draft.
Use the Check Number/Transaction Number field to indicate that it was paid with a credit memo.
When you run the sync, you will get a notice that InvoiceASAP cannot find the invoice in order to apply a payment. This is because the invoice is already paid in QuickBooks with the Credit Memo.
This invoice has been marked as paid by a Credit Memo.
Remember that this workaround will only work if the invoice is paid in full.
On InvoiceASAP click the Pay button.
Select Check, Card or Draft. In this example, I selected Check.
In the Check Number field, indicate that it was paid with a credit memo.
The invoice is now marked as paid in InvoiceASAP.
When you run the sync, you will get a message similar to this one.