Thanks for reaching out and providing detailed information about your concern, @mainah65.
I'd be happy to help you handle your issue with the Vendor with ACH access.
You can void the bill payment for your to clear the reversed ACH. I'll show you how:
- On your QuickBooks Online (QBO) account, click Expenses in the left menu.
- Go to the Expenses tab.
- Locate the bill payment you want to reverse.
- Click the drop-down arrow under the Action column.
- Select Delete.
- Choose Yes to confirm.
Once done, create another bill payment so you can match it to the downloaded bank transaction.
You may also consider consulting your accountant before doing the steps above. They can provide further guidance to keep your books accurate. If you don't have one, we can help you find someone to help you. You may use our Find an Accountant tool to locate accountants based in the US.
For future reference, I'm adding this great article that can guide you in reconciling your accounts in QBO: Reconcile an account in QuickBooks Online. This link provides detailed information on how to make your books accurate when reconciling.
Feel free to let me know if you have further questions or concerns. You can always reach out to the Community or me anytime you need a helping hand. Take care!