Merchant ID in Pockyt's system. A unique value created and assigned by Pockyt’s support team during the onboarding process

Store Number in Pockyt's system. A unique value created and assigned by Pockyt’s support team during the onboarding process

The supported currency "USD"

The parameter signature. It is the calculated MD5 hash value of the API token used to encrypt the request message and authorize transaction requests. For more information, visit Signing API Parameters

Current UTC time, correct format should be "yyyy-mm-ddTHH:MM:SSZ"