[ic] Writing a new payment module - please help!

[interch]

code match only IS zip match only. zip code = code.  Avs return values are
standard in the industry and have not changed in years.  Here is a list of
what the banks actually return.  You should be able to at least use it as a
reference so you know what variations are possible.

There are also a few new avs codes out for non US transactions, but they are
not widely used yet.  Most countries do not support avs and you will usually
get a return of G or U for card numbers issued outside the US.


A - Address Matches, Zip code does not
E - Error
N - Address and Zip code do not match
R - Retry, system not available
S - System not supported by Issuer
U - Address information not available
W - 9 digit zip matches, address does not
X - Exact match address and zip
Y - Exact match address and 5 digit zip
Z - 5 digit zip matches, address does not
G - Non avs participant outside US; not verified



> > > >What do pop.avs_code, pop.avs_zip, and pop.avs_addr expect to receive
> > > >from the response? The payment gateway I'm using can return several
> > > >responses including: matched, code match only, address match only,
and
> > > >no match, but there is no 'zip match only'.
> >
> > 99.9%, the relation must be:
> >
> > pop.avs_code    - > matched     (both zip code and address are matched)
> > pop.avs_zip    ->  code match only    ( zip code matched only)
> > pop.avs_addr  ->  address match only   ( as says)
> >
> > If you are not sure, it may be a good idea to ask the bank "Does 'code
> > match only' mean only the zip code is verified"?
> >
> >
> > David
> > dzhang@msihosting.com
> > http://www.msihosting.com
> > Expert -- ecommerce solutions, interchange hosting
>
> David,
>
> Thank you for your reply, but I don't quite get you on this.
>
> According to my documentation, one of the following messages is returned
> (only) for authorized transactions in response to the card security code
and
> address provided:
>
> DATA MATCHED - passed all checks
> SEC CODE MATCH - security code valid, but address invalid
> ADDRESS MATCH ONLY - address valid, but security code invalid
> DATA NOT MATCHED - both security code and address invalid
> DATA NOT CHECKED
>
> What is the point in checking this response *after* a transaction has been
> authorized? Settlements occur automatically on the same day. I would have
> thought the messages above would only be returned upon a failed
transaction.
>
> What does Interchange do with the three avs values, and why should they be
> returned upon a *successful* transaction?
>
> I'm very confused!
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