How can i get tenancy name?

[Jumbo (Jumbo Suzuki)]

I think you right, but according to below post, you can use former version orchestrator. plz check this.

Consuming APIs with the new Cloud Orchestrator

With the rollout of the UiPath Cloud Platform, we changed how we authenticate users in Orchestrator APIs. Unfortunately, this had the unintended consequence of breaking code that people used to script Orchestrator actions in the Community Orchestrator. For more details, see this thread. To remedy this, we are enabling back the old method of authentication (basic authentication) temporarily to unblock users while we roll out our more permanent solution. Basic authentication will only be enabled…