The Commerce API supports the following service profile levels:
Level 1–You can only use the API keys in an implementation/evaluation phase (test orders only). This profile creates carts as test orders.
Level 2–You can use the API keys in production (both test and live orders).
Level 3–You can use the API keys in production (both test and live orders). These API keys can create payment options and apply payment methods to a cart. A client can provide credit card details in Commerce API requests.