How To Use Pre-Authorization Transactions; Credit Pre-Authorization - VeriFone Vx 810 Duet Reference Manual

How to use Pre-Authorization Transactions

Pre-Authorization transactions involve a two-step process – a Pre-Auth
followed by a Pre-Auth Compl. This transaction combination is typically
used for handling gratuities – when an authorization request is required
before the tip amount is known.
The Pre-Auth transaction will initiate an authorization for the pre-tip amount
and print a receipt for the customer to sign.
Once the customer has added a tip, the Pre-Auth Compl transaction is used
to adjust the total and to move the transaction into the active batch for
settlement.
A batch cannot be closed with open Pre-Auths. Pre-Auths must be
changed to Pre-Auth Compl or removed from the file using Del Pre-Auth.
Pre-Authorization transactions cannot be used with debit cards.

Credit Pre-Authorization

The Pre-Auth transaction is used to obtain an authorization for an estimated
amount before the final amount is determined (such as before a tip is added)
and to print a receipt for the customer's signature.
1 At the Main Menu
2 Enter
PRE-AUTH AMOUNT
3 Swipe credit card and press OK.
4 Processing...
5 Detach receipt and press
X
41 V 810 DUET REFERENCE GUIDE
until
SCROLL
(1 to 7 digits) and press OK.
.
APPROVED
(F1
YES
appears, then press F4.
PRE-AUTH
to print customer receipt.
)