Problem:
The following message is logged in vRO when running the 'Ad Hoc Backup' workflow:
(com.hitachivantara.protector.backup/performAdHocBackupOf) Error in (Dynamic Script Module name : performAdHocBackupOf#17)
HdidPluginException[Cannot perform Ad Hoc Backup, Tag 'HDID/Protector Ad Hoc' already in use. Other VM(s) may be backed up because the following objects are tagged: [Name: , Type: VirtualMachine, Id: vm-4398]
Please try again later or contact your system administrator if the failure persists.
Cause:
If you manually assign the 'HDID/Protector Ad Hoc' tag to a VM and subsequently delete that VM, then run the 'Ad Hoc Backup' workflow on any other VM, the operation will fail with the above error.
Solution:
Delete the 'HDID/Protector Ad Hoc' tag from vSphere then recreate it.
The 'Ad Hoc' tag should never be manually assigned. It should only be automatically assigned by Protector vRO workflow scripts.