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Flex Microform and Unified Checkout Added 8-Digit Card Number Prefix

Products Included:
  • Flex Microform
  • Unified Checkout
Region/Country:
Global
Expected Release Date:
March 2025
Internal Epic Number:
20531
Flex Microform and Unified Checkout will now support 8-digit card number prefixes. A new optional
transientTokenResponseOptions.includeCardPrefix
REST field will enable users to select whether the Capture Context returns a 6-digit, 8-digit, or no card number prefix. To select the type of card number prefix:
  • No field included: A 6-digit prefix is returned. (default)
  • true
    : An 8-digit prefix is returned.
  • false
    : No prefix is returned.
The following conditions apply:
  • 8-digit card number prefixes apply only to Discover, JCB, Mastercard, UnionPay, and Visa brands with 16-digit card numbers or more.
  • Any card with fewer than 16 digits will return a 6-digit prefix even when the
    transientTokenResponseOptions.includeCardPrefix
    field is set to
    true
    .
  • Any card brand other than Discover, JCB, Mastercard, UnionPay, or Visa will return a 6-digit prefix even when the
    transientTokenResponseOptions.includeCardPrefix
    field is set to
    true
    .
  • If any card brand is co-branded with Discover, JCB, Mastercard, UnionPay, or Visa, an 8-digit prefix will be returned if the
    transientTokenResponseOptions.includeCardPrefix
    field is set to
    true
    .
IMPORTANT
If your application does not require a card number prefix for routing or purposes, set the
transientTokenResponseOptions.includeCardPrefix
field to
false
. This will minimize your personal data exposure.
For more information on 8-digit prefixes, see: 8-digit-bins-and-pci-dss-what-you-need-to-know
Customer Impact
Merchants will need to determine the correct card number prefix format to use with their payment system. If no decision is made, the current 6-digit format will continue to be used for all cards and card lengths.