我不需要解决方案 (只是分享信息)
Note to self:
If you have multiple vCenter servers, and their credentials are all in NetBackup, and you decommission one of them, and you don't remove the credentials, any subsequent intelligent policy backups will fail until you remove the credentials. (I would guess because any vcenter host is polled when a VM intelligent policy backup kicks off)
heh... just sharing the info in case anyone else ever runs into this problem.