The management domain vCenter credentials provided by SDDC Manager must have the Global licenses privilege assigned and be a member of the LicenseServiceAdministrators Single Sign-On group. Configure them and try again. You can activate management only of VCF cloud accounts of version 9 or later, which are not currently managed by this VCF Operations instance. The selected VCF cloud accounts are not eligible for activating managementService or view is not available for the selected objectVCF Operations 9.0
VCF Operations 9.1
The credentials provided by SDDC manager for vCenter don't have licensing privileges.