A duplicate transaction is defined as a transaction that contains the same account number, the same expiration date, and the same amount on the same day.
Having the Force Duplicate option de-activated by default ensures that patrons are not double charged because of errors (either human error, an error between Theatre Manager and the credit card application, or an error between the credit card application and the merchant provider).
If the transaction is legitimate, check the box to have the patron’s credit card charged again for the same amount.