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

Merchant APP ID (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 type always should be set as 'tipadjust'

A unique response transaction id from the response of a sale transaction (Numeric - Length of 20 chars)

Should match the original sale stan (Numeric - Max length of chars 6)

RRN number from sale txn response (Numeric - Max length of 15 chars)

Approval code response from sale transaction (Alphanumeric - Max length of 8 chars)

If the merchant has multi-MIDs, they need to send both the child EPI and the parent EPI in the EPI request