Validate a user by supplied password, returns session key

The operation is meant to be used for verifying a payment reference which a customer wish to pay

The operation is meant to be used for sending transaction that has been done on the telecom side following the verifyReference operation

The operation is meant to be used for finalizing a transaction with the details of transaction from telecom or payment provider.

The operation is meant to be used for sending all transaction that has been processed throughout the day back to the Payment service for reconciliation.