There are three URLs listed on the endpoint of the specification. Which one should I use? June 28, 2022 09:27 Updated Test environment: Sandbox server Production environment: Production server Please do not use the Staging server. Related articles Is it necessary to use a recon file? What happens to the Application Program Interface(API) response when maintenance is being performed on the PayPay side? What is the restriction of IP address in using OpenPayment(OPA)? Tell me how to handle an UNAUTHORIZED(08100016) error under the test environment. Comments 0 comments Please sign in to leave a comment.