Hello Rdo,
It sounds like you have a sharp eye for detail and I'm glad you've noticed the error in your sales tax return before filing it. Ensuring you have the correct details makes for easier filing and you don't have to worry about making corrections later. I'm happy to go over this with you.
Since you've checked the dates, the transactions, and all the other important details that go into a sales tax filing, the next step is to check for data damage to your company file. Data damage to the file can result in things like the program incorrectly pulling details from other transactions. I've got an article that can walk you through this: Fix data damage on your QuickBooks Desktop company file
To get a hand with any of those steps or to troubleshoot further, get in touch with the QuickBooks Desktop support team directly. Please note that hours of support have been reduced in response to staffing for COVID-19, with all Desktop products receiving support from Monday to Friday between 9 a.m. and 8 p.m. ET. Learn how to contact support and other important details here: Intuit QuickBooks Desktop software support policies
Have a great day.
