Finding the number of workspace in the Source Tenant assists you to pre-plan the migration based on the numbers.

Please follow the below steps to find it.

• Navigate to the PowerBi section. Then, click on “Get Latest” option under the SOURCE tab to retrieve the Groups / Personal Workspaces available in the source tenant.
  
  
  
  
• At the bottom section of your screen, you will find the page count alongside the item numbers, this indicates the total number of personal and group workspace in your source tenant.