With reference to the above API, i would like to understand the following;
1. In order to retrive a transaction using a transactionId, is it mandatory to initiate the transaction from Vantiv - Express enviornment ?
2. Can a transaction be retrived when a Vantiv (as a card-processor) is is not used at a merchant in a given region ?
3. Can a transaction be retived based on tokenised PAN of a card holder who has authorised our app to read their transaction?
4. Can Vantive API be used to fetch transactions in APAC ?
We are a startup, based in Singapore, building payment-linked-loyalty-platform and exploring card-processing/payment-gateways who can provide us API's we can use to build our solution.