What is the maximum valid period of Pre-auth? January 19, 2022 16:52 The maximum valid period is 30 days. Related articles When is the status of the transaction updated? There are two ways to obtain user authorization. Which should I use? Can the amount be changed before it is fixed for PreAuth & Capture? If the amount at the time of capture is different from the amount at the time of Pre-auth What happens to the users action? How long is the user authorization valid? Comments 0 comments Please sign in to leave a comment.