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China UnionPay
 Aggregated Fare Workflow

The
China UnionPay
 (CUP) aggregated fare workflow begins at the at a contactless terminal of a point of access to the transit system. The final fare that is charged is not always available at the time of travel. It is calculated at the end of a travel period, based on journeys made during that period, and typically within 24 hours.

Figure:

Aggregated Fare Transaction Flow
Diagram showing aggregated fare transaction workflow
  1. The cardholder taps the card at a terminal to enter the transit system.
  2. The gate validates the card using offline data authentication (ODA), the card expiration date, and the deny list.
  3. You send an authorization request for a nominal amount.
  4. You calculate and aggregate subsequent trip fares for the customer until the Cumulative Spend Limit (CSL) or Maximum Travel Time (MTT) is reached.
  5. If the CSL or MTT is exceeded, you request an additional authorization request.
  6. You submit a purchase request for the cumulative trip fares to
    Cybersource
     at the end of the journey.
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