Pre-auth mode – Gasboy CFN Series NBS User Manual
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MDE-4390F Gasboy CFN Series NBS (GL3) Credit and Debit Card Network V 1.3.0.0 · November 2008
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NBS Command
Using NBS
Pre-auth Mode
This parameter can be set to one of the following modes:
1 - Value Only
The value-based mode will set the pre-authorization limits to the amount listed in the Card
Parameter table for every card. Refer to
for more
information about setting card limits. In this mode of operation, PS2000 is still supported by
NBS for all applicable bank cards. Specialty club cards, such as the Quarles and Fuel24 cards
are restricted by their internal restriction limits and are not subject to the limits in the Card
Parameter Table.
2 - PS2000 Table
The PS2000 mode allows the Card Parameter Table to restrict non-standard bank cards. The
more standard bank cards will be limited only by the amount authorized by the host system,
not the setting in the Card Parameter Table. See the following table to identify the card limits
set by the Card Parameters Table, limits set by the host, or limits sent in specialty cards.
Table Limited Cards
Host Auth Limited Cards
Specialty Limited Cards
Debit card
American Express
Fuel24
Cenex Gift
Discover
Quarles
SVS Gift
Master Card
Cenex Regional
GROWMARK Gift
Visa
GOGAS Gift
Master Card Fleet
Kwik Trip Gift
Visa Fleet
Kwik Trip Fleet
WEX
Kwik Trip Credit
Voyager
Fleet One
Gascard Access
Fuelman Plus
3 - Host Based
Host Equity-Based Authorization (HEBA), the system default, allows the host to govern the
amount of authorization for each card. Depending on the rules of the card, one fleet card can
be authorized for $250 while another fleet card is set to a different amount. Using HEBA is a
flexible (and recommended) way of dealing with PS2000 requirements.
One of the greatest advantages of HEBA is its ability to provide an organization’s group with
equality. If any changes are needed for a card type, one change at the host will change the
behavior at all merchant locations within that group. This allows a cost-effective way of
controlling or modifying pre-authorizations at all merchant locations from one host change.
The Card Parameter Table is not utilized for setting limits in this mode for any cards except
debit and gift cards. Debit and gift cards must always have their limits regulated by the Card
Parameter Table. Review the debit and gift card sections for more information about using
these types of cards. Specialty cards, if set up to use the site limit table, will not honor the site
limit table in HEBA mode. Specialty cards, used in HEBA mode, will be limited by the host.