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New Optional Response Fields for Universal Financing Parity Merchants (UFP)
New optional response fields have been added for UFP merchants. The new fields include the following:

initiating_merchant_id: contains the ID of the merchant where order was made.

city: contains the store’s city where the order was made, obtained directly from card rails (externally controlled).

store: contains the store’s name where the order was made, obtained directly from card rails (externally controlled).

card_last_four: contains the last four digits of the payment instrument (FPAN).

original_loan_amount: contains the original order total.

channel: contains the channel type where an Affirm checkout was initiated, for example:
      - Affirm Direct
      - Apple Pay
      - Google Pay
      - Affirm Card
      - Affirm VCN