Aggregated

This type of transaction uses a contactless terminal at points of access to the transit service. The final fare charged is not always known at the time of travel. It is calculated at the end of a travel period (typically 24 hours) based on journeys made during that period.

Figure:

Aggregated Transaction Flow
Diagram that illustrates an aggregated transit transaction.

Discover Aggregated Transactions

When the cardholder taps their card for travel, initiate an aggregated transaction by requesting an authorization for 1.00 USD that includes the
processingInformation.authorizationOptions.aggregatedAuthIndicator
field set to
true
. If the issuer approves the authorization, subsequent taps do not require an authorization. The capture amount must not exceed 15.00 USD in the US, and the capture date must not exceed the aggregation duration of up to 14 days from the first tap transaction.
If the aggregate total nears the maximum aggregation amount, and the next tap will cause the aggregation amount to exceed 15.00 USD, capture the existing aggregate total. Then, authorize the current tap for 1.00 USD to begin a new aggregation cycle, and include the
processingInformation.authorizationOptions.aggregatedAuthIndicator
field set to
true
.
For more details about Discover aggregated transactions, see the
Discover Global Network Contactless D-PAS: Open Loop Transit Implementation Guide
.