Hi icanauto,
The phrase "This transaction has already been accepted" usually indicates that the payment was successfully processed and approved by the agency or vendor. In your situation, it seems that the state agency has accepted your payment for the sales tax dues.
If you haven’t made any transactions related to the state agency or sales tax, could you clarify where in QuickBooks Online you encountered this message? This will help us determine the nature of the transaction.
You might also consider reaching out to your financial institution to confirm and verify the details of the transaction.
If you processed a sales tax payment outside of QuickBooks Online, you can manually record it by following the Step 3: Record your sales tax payment in QuickBooks section of this article: File your sales tax return and record sales tax payments in QuickBooks Online.
Let us know if you need further assistance. We’re here to help.
