Why Primary Email Device missing in cmn_notif_device table eventhough a valid user present in sys_user tableIssue Users not receiving the notification even though they have a valid email address in the sys_user table If we open the email log, we see the below error in the email: "Notification 'xxxxxxxx ' (YYYYYYYY) excluded recipients because user's device contains an empty or invalid email address (see "cmn_notif_device.email_address"): 'Venkat Test' (XXXXXX)"CauseIn the cmn_notif_device table User "Venkat Test" Primary Email Device missing. If users were created by a Transform Map without business rules running and therefore without the Create Primary Email Device business rule having been triggered against them. Some users do have Primary Email Devices created (due to being created via a different method which did trigger the Business Rule) Refer below screenshot: Resolution* Create missing Primary Email Device in cmn_notif_device table. Refer to product documentation Set up a notification device in UI15 and earlier * Update Transform Map to run business rules so that issue will not happen for newly imported users. Refer to below screenshot : Related Links * Once a record is created in the sys_user table, with the help of OOB business rule "Create primary email device" Primary Email Device creates in cmn_notif_device table. * If we update Emil Address in the sys_user table "Update Email Devices" business rules sync the email in cmn_notif_device table.