Hello, teresa-btmilner-.

Thanks for turning to the Community for support. I want to make sure you're able to void the check in your QuickBooks Online account.

This can be done in a few steps. Here's how:

1. Go to Expenses, then Vendors.
2. Select your contractor (vendor).
3. Look for the payment you want to delete or void, then select View/Edit.
4. Select More at the bottom of the screen, then Delete or Void.
5. Choose Yes to confirm changes.

The following linked article provides additional info about voiding or canceling contractor payments in QuickBooks Online.

Please drop a comment below if you have any other questions or concerns. I'll be here to help.