If you need to correct a payment method, you may use pay adjustment function to make the close ticket as open ticket. (ex.Processed as cash payment by accident, instead of credit card payment).
This process will only work Cash & Other payment. For the tickets that received credit card payment, refer to Credit Card Void from : Void & Return
FD: MAP Screen > Ticket button on right side > Close Tickets > Adjust payment
QSR: Sales Screen > Ticket button on top left corner > Close Tickets > Adjust payment
Check on delete for payment type Cash.
When prompted for confirmation, press YES. If you do not have permission to do adjust payment it will ask for the manager's access code.
Payment will be deleted and you will be able to see an open ticket.