Changing the notification preference gives error "Update Error: Unable to update preferences.Please try again later."Issue Login to the instance as a non admin user.Go to the preferences->Notifications->General->Toggle Allow Notifications.Gives the error message "Update Error: Unable to update preferences.Please try again later."ReleaseAllCauseThe issue is reported through a PRB1700233.sys_user/*/Write Acl is failing for the user due to the ACL script.ResolutionTo fix the issue, create a New write acl on sys_user table on Notification field for snc_internal role.Once the ACL is created, toggling user preference should not cause any error message.