Unitec Sierra Management System - Manual (Page 25)

Sierra Programming Reference Manual 15
Figure 14. Verifone Wash Dispensing
Adjust position of the washes so that the wash number at the leftmost column (labeled "No.") of the
Edit Wash Type screen matches VeriFone's Package number. Click Save.
NOTE: For WashPay self-serve sites only: If you have WashPay self-serve bays, after the credit processor
is selected, go to the Self-Serve Credit Validation box at the bottom of the page and select either Hot File or
Pre-Auth. These functions work regardless of the credit processor selected.

Hot File: No pre-authorization transaction is run prior to the sale of the wash. If the transaction
is declined after the sale or if the card is reported as stolen, a “hot file” will be created. Declined
credit cards are automatically added to the hot file when it is swiped and the transaction is not
authorized. The advantage of this method is that the credit merchant’s processing rate will be
lower because only one transaction fee is charged per wash. The disadvantage is that you will
run the risk of occasionally giving away a free wash because the credit card transaction was
declined by the credit merchant for insufficient funds after the sale.

Pre-auth: The pre-authorization is performed prior to the sale of the wash. The pre-
authorization amount should be set to the highest wash package price. The pre-authorization is
then captured with the sale. When the sale completes, the pre-authorization hold will be
removed and those funds will be available for completing the transaction. The advantage of
this method is that cards with insufficient funds (to cover the pre-authorization amount) will not
be allowed. The disadvantage is that the merchant’s processing rate will be higher for any
transaction where the final sale amount does not match the pre-authorized amount.