Thanks for posting your concern here in the Community, @toastmasters. Let me share a few details about deleting transactions in QuickBooks. Then, let's delete or void your transaction made in error.
Transactions done by mistake can either be voided or deleted to remove from books. You can delete any type of transactions in QB Online. Here's how:
Learn more about the different ways of handling transactions created by mistake. Read through our help article: Void or delete transactions in QuickBooks Online. It'll help you decide whether to void or delete a transaction.
Feel free to message us again if you have anything in mind about QuickBooks, @toastmasters. Know that you can always count us here in the Community.