I'll share two scenarios regarding your concern about matching an incorrect bank transaction amount to a payroll check, Brewer.

Suppose you want to keep a record of the payroll check transaction. In that case, you can simply exclude the bank transaction and manually clear the payroll created in your QuickBooks Online (QBO) account. Once the records are good, you can settle the amount difference with your employee personally or outside the QBO program.

On the other hand, if you want to keep the recorded bank transaction, you'll have to delete and recreate the payroll check in QBO to match the cashed amount. Then, you may adjust the next payroll run.

Additionally, you can check out this article to learn more about managing your income and expenses effectively and any possible errors accordingly: Learn the reconcile workflow in QuickBooks.

Keep me posted if you have questions or concerns about managing your bank transactions in QBO. I'll be here to lend a helping hand. Have a great day ahead!