This XML Web service allows clients to log on to Multimerchant Pay System. Ver. 1.1.4.1

The following operations are supported. For a formal definition, please review the Service Description.

• MakePayment
  This XML Web service validates a client and redirects them to the Banco Popular Checkout Payment System
• ReverseACHTransaction
  Reverse ACH Transaction
• ReverseCardTransaction
  Reverse Card Transaction
• TransactionSearch
  Transaction Search