The documentation mentions two different limits, and they often get mixed up.

Actual Workspace Limits on Databricks for GCP

• Hard limit per account:
  Databricks on GCP supports up to 20 workspaces per account.
  👉 Source: Resource Limits (GCP)
  https://docs.databricks.com/gcp/en/resources/limits

• Creation rate limit:
  You can create up to 200 workspaces per week in the same Google Cloud project.
  👉 Source: Create Workspace (Classic)
  https://docs.databricks.com/gcp/en/admin/workspace/create-workspace

Please be aware of the difference:

• 20 workspaces = maximum number of workspaces an account can have on GCP.

• 200 per week = how many workspaces you could create in a given week inside a single GCP project, but you are still capped by the overall 20-workspace limit.

This is why the numbers seem contradictory, they refer to two separate types of limits (quota vs. creation rate).

If you need more than 20 workspaces, you’ll need to contact your Databricks account team to request an exception or redesign the workspace strategy.