prerequisites for Tenant migration in Power BI

Hello YashikaAgrawal,
Thank you for reaching out to the Microsoft Fabric Community.

If you don’t have access to a report, the REST API will not let you download it. The APIs enforce the same security model as the UI.

To address this, you have a few options:

• Use a Power BI Service Administrator account this can list all workspaces and reports.
• Take over workspaces in the Power BI Admin Portal. Once you take over, you become the admin and can assign yourself access to all contents.
• Verify that Download .pbix is enabled for reports. If this setting is off, even Admins cannot export the report file.
• Coordinate with the report owners to grant you access or enable downloads.

Thanks you, lbendlin & mohitkumawat for sharing valuable insights.

If this information is helpful, please “Accept as solution” and give a "kudos" to assist other community members in resolving similar issues more efficiently.
Thank you.