Does a user authorization expire in 15 minutes? January 19, 2022 18:48 A user authorization is valid for 365 days. Related articles How long is the user authorization valid? How can merchants check when a user authorization expires? Can the Merchant Order ID (merchantPaymentId) be duplicated? Will a webhook notification be sent in the case of cash back failure due to a merchant's insufficient advance point? Is it possible to test an expired account? Comments 0 comments Please sign in to leave a comment.