WSS customer is providing the Web Gateway services to their subsidiaries and working like a service provider.
When activating multiple tenants and adding the same administrators to multiple tenants, an error is reported indicating that the email address is not unique. The same administrator email addresses should be used to login to each tenant.
Current Portal limitation requires a unique email address per tenant.
WSS product team currently looking into option of handling multiple admins with same email address across multiple tenants.
WSS Portal administration
Local (not federated) logins to Portal
Fixed with Portal update May 27 2022. WSS Admins can now add the same email address to multiple tenants, and users will be asked to select the active tenant they want to administer after logging into the Portal.