I can share the steps in handling the currency exchange difference, CCR1.

You can write it off as bad debt in QuickBooks Desktop. This way, you'll be able to close the invoice. First, you'll have to add an expense account to track the bad debt. I'll show you how:

1. Go to the Lists menu.
2. Choose Chart of Accounts.
3. Click the Account drop-down menu, then hit New.
4. Select Expense, then Continue.
5. Enter "bad Debt" in the Account Name field.
6. Click Save and Close.

When you're ready, here's how to close out the open invoice:

1. Go to the Customers menu.
2. Choose Receive Payments.
3. Enter the name of the customer in the Received from field.
4. For the payment amount, enter $0.00.
5. Select Discounts and credits.
6. In the Amount of Discount field, enter the amount you'd like to write off.
7. For the discount account, select the bad debt account you've created earlier.
8. Click Save and Close.

I also recommend checking our Accounts Receivable Workflow Guide to learn more about the different ways of tracking customer transactions.

We're open here 24/7, so please don't hesitate tp visit us again if you have any other concerns or questions. Have a good one.