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Thread: IC Verify Integration?

  1. #1
    Mark Buonagurio

    Default IC Verify Integration?

    Anybody integrated ICVerify credit authorization software with A5? I'm considering a POS app that needs to authorize credit cards.

  2. #2
    "Certified" Alphaholic Marcel Kollenaar's Avatar
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    Apr 2003

    Default RE: IC Verify Integration?

    see and search for CCVALID(), you will find:

    Logical Validation_Flag = CCVALID( Credit_Card_Number as C [, Option_Number as N ] )


    A string of numbers in character format.

    Optional. A number that indicates the type of checksum to calculate.

    0 = Credit Card (Default)
    1 = PostNet
    2 = UPC


    CCVALID() returns .T. (TRUE) if a field contains a valid Credit_Card_Number; otherwise, it returns .F. (FALSE). Only digits, dashes ("-"), and blanks spaces are allowed in the Credit_Card_Number. Alpha Five automatically strips out blank spaces and dashes in the Credit_Card_Number before checking its validity.

    A common requirement in invoicing applications is to catch data entry errors in credit card numbers. For example, to prevent the entry of invalid card numbers into a field called CARDNO, create a validation rule for the card number field with the expression CCVALID(CARDNO).

    The CCVALID() function works as follows: the last digit of the card number (the checksum digit) is ignored. For the remaining numbers, Alpha Five computes a checksum (see the CHKDIGIT() function). If the checksum equals the checksum digit, the card number is valid.

    Marcel Kollenaar

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