Hi: This information is required for data ingestion (PM OI Connector, Spectrum Data Publisher, UIM). Due to a defect in the OI code that handles login and LDAP group matching we don't presently have any accounts that grant us Tenant Admin rights. To be clear the product successfully retrieves all of the groups of the proferred user, but fails to match the defined group, for some reason. Hence the need to find out TenantID from something other than the UI.
The geo-local Support expert for OI has worked this with us - the architecture has changed in 23.2 so it required a few moments of head-scratching. Now answered, thanks.