Payments

Thanks for posting here, @SvetlanaZ.

I want to help you out with applying payments. I can help you further with applying multiple payments for a customer. If you have multiple Accounts Receivable, you can receive multiple payments through the QuickBooks Receive Payments window.

All you need to do is switch the Accounts Receivable account to the ones you will apply payment for. Here's how:

1. Go to the Customers menu then Receive Payments.
2. Update the A/R account dropdown.
3. Mark the invoices you need to receive the payment to. See this Premier 2019 screenshot:
   

This is the only way you will get rid of the error when applying the payment directly from the customer's profile.

Post again if you have other invoicing concerns in QuickBooks. I'll be right here to help anytime. Have a wonderful day!