Merchant APP ID (Alphanumeric - Length of 32 chars)

Merchant APP KEY (Alphanumeric - Length of 32 chars and special chars $@%#)

EPI is an end point identifier, Identify the device on valor infrastructure, it's a 10 digit number starts with 2

Transaction amount - Maximum amount $99,999.99 (Ex: 0.1 to 99,999.99). A request should not be sent when the amount is 0. The amount must be greater than zero