Hello, dtfarms.
Let me help you make a correction on your check.
You'll want to pull up the check, and then adjust the amount. You can use the Search function by clicking on the Magnifying glass icon (located beside the Gear icon) to look for it.
If the check is from a closed accounting period, you have the option to make the correction. Though, I'd suggest reaching out to an accountant for the best possible action.
Please don't hesitate to reach out to me if there's anything else you need help with.