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The message

The message with the new status will contain the following fields.

Data Type  Field Name   Required?   Description 
Long transactionId  Mandatory   Unique identifier assigned by GP2.0 to an incoming payment.
        Same as transaction.id
String providerId  Mandatory   Unique identifier assigned to partner’s call back service
String clientId  Mandatory   Seller id. The incoming payment owning client id
String newStatus  Mandatory   The incoming payment’s after an update new status.
String oldStatus  Mandatory   The status before update