American Express Authorization and Capture Options
You have two options for handling authorizations and captures.
Option 1:
- Send an authorization request for a nominal amount.
- During the travel period, collect the rider's tap data to calculate the aggregated fare.
- When the floor limit is reached, send a capture to collect the accumulated amount.
- After completing the capture, return to step 1 to handle subsequent trips and journeys.
Option 2:
- Send an authorization request for a nominal amount.
- During the travel period, collect the rider's tap data to calculate the aggregated fare.
- If the number of trips exceeds the floor limit, send a delayed online authorization.
- Upon completion of the delayed online authorization, return to step 1 to handle subsequent trips and journeys.
Implement the version that suits your business model. However, American Express requires your payment technology partner (PTP) to support nominal and full value authorizations during the L3 certification.