Duplicate Workspace error message (but this workspace DOES NOT exist within the capacity)

Hi duncfair,

Thank you for reaching out to the Microsoft fabric community forum. Thank you lbendlin, for your inputs on this thread.

After reviewing the details you provided, I have identified few workarounds that may help resolve the issue. Please follow these steps:

The error occurs because the workspace SDG_MBD_EastGrinstead already exists elsewhere, though it may not be within the capacity you are managing.

In Power BI, when assigning a workspace to a Premium capacity:

• The system checks across all capacities, including default capacities (Pro or non-Premium).
• If the workspace exists in another Premium capacity or the shared default capacity, it is flagged as a duplicate, even if it is not directly visible under your current capacity.
• Occasionally, this can also happen if the workspace is soft deleted (pending backend cleanup) but still registered internally.

Therefore, the error you are encountering is due to the workspace already existing elsewhere in your organization's Power BI environment.

Search the Workspace Globally: Go to the Power BI Admin Portal > workspaces. Use the search bar to locate SDG_MBD_EastGrinstead. Ensure you filter by All workspaces, including Deleted workspaces. Confirm whether it exists and check the capacity assignment.

If the workspace is found, verify its capacity assignment. You may need to move it to the intended Premium capacity or unassign it first.
What is Power BI Premium? - Power BI | Microsoft Learn
Solved solution related to the thread: Solved: Re: Error assigning premium capacity to workspace ... - Microsoft Fabric Community

Sometimes the workspace might be soft deleted but not fully removed yet. Use Power BI PowerShell commands to check hidden or soft-deleted workspaces. In the rare event that the workspace cannot be recovered, please consider creating a new workspace with a slightly different name (e.g., SDG_MBD_EastGrinstead2) to avoid any duplicate name conflicts.

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