Error "Data ONTAP API Failed :Cannot add "DomainUser" to group "BUILTINadministrators". Reason: duplicate entry. (: 13001)" in ONTAP 9 System Manager
Applies to
- Ontap 9.X
- CIFS
- OnCommand System Manager
Issue
- Post 7-Mode Transition Tool (7MTT) migration
- Domain user is removed before removing from a local group
- Customer is unable to add members to a group on the migrated servers.
- In OnCommand System Manager, the following is displayed:

Data ONTAP API Failed :Cannot add "DomainUser" to group "BUILTINadministrators". Reason: duplicate entry. (: 13001)