Set Default Amount Reward Type for Promotions

Used to create or update custom reward types of type Amount. Amount-based rewards represent real monetary values in primary currencies such as USD, EUR, GBP, etc. Defining amount reward types enables you to manage multiple types of currency-based rewards for different geographies, use cases, or integrations with payment systems.
Typical Use Case:
For example, you may want to define a USD reward type to issue dollar-based rewards in North America, or a EUR for gift card redemptions in European markets.