Is there a quick way to fix a tender error other than voiding the transaction and re-entering it?

1. From POS press Shift-F9 Detail and type in a Reference called "Tender Correction". You can also enter additional information on the Comment line, such as the original transaction number.
2. Press F12 in the empty POS screen.
3. Post the payment under the correct tender type and refund the same amount under the incorrect tender.

Example: Let's say $100 was supposed to be on Visa and is showing up on X report as short. You also notice the transaction was tendered to Check by mistake. Post -100.00 under Check and $100 under Visa.

You can also use this method to correct over tenders. This will not effect the original transaction, but it will correct the Tender totals for the X and Z reports.

This procedure will only work if "Prevent cashier over-tendering" is UNCHECKED for the tenders being corrected (Manager, Database, Tender Types). Otherwise you will receive "Validation Error 317: This tender type can not exceed the amount due." 

This procedure will not work if you are using integrated credit card processing and the tender was a credit card. If that is the case you need to void the transaction and re-enter correctly. 

If you are using integrated card processing, or have enabled the option to record the card numbers, you can avoid this problem in the future by assigning separate tender types for each card you accept. Then enable validation for each card type. Example: