How can I confirm where a bill was paid

Hi there, mikeshick.

To confirm if the vendor's bill was paid and by what check, you can go to the Vendor information under Vendor Center. From there, you'll have the option to see all vendor's transactions.

Here's how:

1. Click the Vendors menu at the top. 
2. Choose Vendor Center.
3. Select the Vendors tab. Then, go to the Transactions section.
4. Locate the bill and the payment. Then, you'll see the date and the type of transaction associated with the specific vendor.

Then, if the bill shows up paid from the payment entered, I suggest going to the Bank statement. From there, you can verify if there's a payment associated with the specific bill. This way, you can confirm if the bill certainly paid from a vendor or wasn't. Please follow the steps below.

1. Click the Banking menu at the top.
2. Choose Use Register.
3. Select the particular account from the drop-down list.
4. Click the OK button.
5. Find the Payment and the bill associated with that entry.

However, if the bill is not supposed to be paid, you can delete the payment that connected to a particular bill. With this, the entry will now show as open and have the option to link this to payment. Follow these steps on how you can delete the payment.

1. Go to the Vendors menu and choose Vendor Center.
2. Select the Vendors tab. Locate the vendor's name and go to the Transactions section.
3. Find the bill payment and click it to expand the page.
4. Click the Delete icon and choose Delete.
5. Hit OK.

Then, if there's an error and the bill erroneously states paid after deleting the payment, I suggest running the Verify and Rebuild data utility tool. Verify Data self-identifies the most commonly known data issues within a company file while Rebuild Data self-resolves most data integrity issues that the Verify Data finds. To see the additional information and how to perform the process, you can click this article: Verify and Rebuild Data in QuickBooks Desktop.

Please refer to this article to see details on how QuickBooks Desktop offers a wide variety of ready-made vendor reports that tell you where your company stands, in terms of expenses and accounts payable: Customize vendor reports.

Please let me know how it goes. I'll be here should you need further assistance. Wishing you all the best!