Error validating cardaccount number checksum

In some cases the first digit indicates the length of the IIN or the responsibility of its assignment outside of ISO.

If MII = 9 then the first 3 digits should be the country code (CC). 1 digit: Calculated using the Luhn formula for computing modulus 10 "double-add-double" check digit: Double the value of alternate (odd) digits starting by the least significant (first right hand) digit. If this field is not used the content will be an space followed by a surname separator (/). 3 digits: Digit 1 (most significant): Interchange and technology: 0: Reserved for future use by ISO. 2: Available for international interchange and with integrated circuit, which should be used for the financial transaction when feasible. 6: Available for national interchange only, except under bilateral agreement, and with integrated circuit, which should be used for the financial transaction when feasible. Digit 2: Authorization processing: 0: Transactions are authorized following the normal rules. 2: Transactions are authorized by issuer and should be online. 4: Transactions are authorized by issuer and should be online, except under bilateral agreement.

The bank that issued this card to your customer has imposed some special conditions on the card or the use of the card.

This could also indicate that the use of the card has been temporarily suspended.

This field is dynamic, it is initialized with the value of the AA field the first time the card is used in a new cycle. Alternatively this field may indicate the date from which the card is valid. 2 digits: 00: Infinite, AR should be decremented but never reset. 84: Cycle begins the day of the month specified in CB of every third month. If FC = 02 and a FS is in place it means that field ACSN is present. 9 digits: The first digit represents the algorithm used to calculate a verification value to validate the information on the magnetic track against the embossed characters, where 0-4 are available for national use, 5-8 are available for international security methods given by ISO/TC 68, and 9 is reserved for private use. 2: Do not include DD field in transactions messages.

If 3 zeros (000) are written in this field it means card not valid for international interchange. 4 digits: Maximum amount of money permitted in this cycle. The field must be updated each time a new cycle begin. 83: Cycle begins the day of the month specified in CB of every month. It is incremented by one unit in any additional card. 1: Do not include AD field in transactions messages. 8: Telecommunications and other future assignments. 89: Telecommunications administrations and private operating agencies. Then add the individual digits of doubled (odd) numbers and even digits of the original number. Otherwise subtract the value from the next higher number ending in 0 (tens complement of the unit digit). Example: If the account number without check digit is 1234 5678 9012 344 then (8) 4 (6) 2 (2) 0 (1 8) 8 (1 4) 6 (1 0) 4 (6) 2 (2) = 65, therefore the check digit is 70 - 65 = 5 and so the complete account number is 1234 5678 9012 3445. 3 digits: Digit 1 (most significant): Interchange and technology: 0: Reserved for future use by ISO. 2: Available for international interchange and with integrated circuit, which should be used for the financial transaction when feasible. 6: Available for national interchange only, except under bilateral agreement, and with integrated circuit, which should be used for the financial transaction when feasible. Digit 2: Authorization processing: 0: Transactions are authorized following the normal rules. 2: Transactions are authorized by issuer and should be online. 4: Transactions are authorized by issuer and should be online, except under bilateral agreement.

dvor-barnaul.ru

89 Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>