404 Error in ADF while trying to fetch data from Power BI APIs

Hi Everyone,

I created an Synapse pipeline to extract the user activity from the Power BI API. I set it up as follows:

1. Creating an Azure Security Group 
2. Added the Azure DataFactory as a member to that security group
3. Adding the security group to the Power BI Admin portal 'Allow service principals to user Power BI API's'
4. Created a linked server in the ADF
   

   
   But I keep getting the error message as below:
   
   Rest call failed with client error, status code 404 NotFound, please check your activity settings.
   Request URL: https://api.powerbi.com/v1.0/myorg/admin/.
   Response:
   
   I have even referred to some posts with similar implementation as below but still no luck:
   https://justb.dk/blog/2021/02/extracting-the-power-bi-activity-log-with-data-factory/
   https://www.phdata.io/blog/how-to-get-activity-data-from-power-bi-service-with-rest-apis/