Payment received to wrong customer

Hi there, perplexedinparadise.

Thank you for posting here in QuickBooks Community. I'll provide information on how to correct the payment that was applied to the wrong customer.

I suggest checking the payment that you've changed to the correct customer. This way, you can verify if the payment was applied to the correct invoice.

Here's how:

1. Click the Sales menu at the left panel.
2. Choose the All Sales section.
3. Find the payment. Then, click it to open the Received Payment page. From there you'll see if the payment was linked to the correct invoice.

If the payment was not applied to the correct invoice, you'll need to unlink or delete the payment transaction for the invoice to be tagged as Open. Then, create again a receive payment and link to the correct invoice.

Here's how to delete the payment:

1. Click the Sales menu.
2. Go to the All Sales section. 
3. Find the payment transaction. Then, click it.
4. You'll be routed in the Received Payment page.
5. Click More at the bottom and choose Delete.
6. You'll be prompted with Are you sure you want to delete this? hit Yes.

Once done, you can now create a payment and apply it to the correct invoice. Please check this article to see the steps: Record invoice payments in QuickBooks Online.

You can also refer to this article as another way of correcting payments: How to fix a payment applied to the wrong customer invoice.

Let me know if there's anything else I can do for you. Just add a comment below or mention my name. Wishing you all the best!