Configuring AWS plug-in with IAM role showed that the Authentication Method field is blank
If you attach an IAM role to a CloudPoint server that is already added to NetBackup, the role is not assigned in NetBackup.
Workaround:
You must sync NetBackup with CloudPoint by using the following command:
/usr/openv/volmgr/bin/tpconfig -update -cloudpoint_server <ip/name which CP is registered in NBU> -cloudpoint_server_user_id admin -manage_workload CLOUD