We are a large consortia (150+ libraries). We need to grant access to resources for specific patrons for a given library. There is no user group to select them, there is no fixed ip, all we can use is a list of users ids generated from analytics (based on the loan history of the patrons). We can use a list of user ids but updating this list manually is unmanageable. An API to create, replace, or update User ID Lists would allow automated synchronization from Analytics, keeping Primo VE access rights current without manual intervention.