> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# createTenant

> Creates a new tenant. Fails with a validation error if a tenant already exists with the provided `externalId`.
Use `upsertTenant` instead if you want to create or update a tenant idempotently.
Requires the `tenant:create` permission.