Accounts receivable

Glad to see you here in the Community, @TUSSU.

Since Accounts Receivable (A/R) is a default account automatically generated by QuickBooks Online (QBO), we're unable to remove a posted invoice from there.

However, if you're referring to a paid invoice showing in the A/R Aging report, it's typically brought on by an unlinked payment to the correct invoice. 

To remove it from the A/R Aging report:

1. Go to + New.
2. Select Receive Payment.
3. In the Customer dropdown, select the customer.
4. Leave the Amount received section blank.
5. In the Outstanding Transactions section, put a checkmark beside the open invoice.
6. Open credits will show in the Credits section. Put a checkmark on the credit you want to apply.
7. Select Save and close.

If the issue persists, you may also delete and recreate the invoice so it will trigger the system to correct the changes.

You might also encounter an impaired balance between Accounts Receivable and Accounts Payable. This is usually caused by transactions affecting the balance sheet or there's an unapplied payment. You can refer to this article on how to fix it: Resolve accounts receivable or accounts payable balances on a cash basis balance sheet in QuickBooks Online.

Please keep me updated on any additional concerns you have by hitting the Reply button below. I'd be happy to lend a helping hand. Have a great day ahead!