Unable to create connection for web activity

Powerbi refersh :

https://datasharkx.wordpress.com/2022/11/07/refresh-power-bi-dataflow-dataset-from-azure-data-factory-synapse-pipeline-via-service-principal-aad-token-generation-part-1/

ADF :

https://medium.com/@kohliaprajita/invoke-azure-data-factory-pipeline-using-web-activity-f945b5bcebef

rather than using managed identity, leveraging service principal / Account authentication while creating the connection and getting the below error :

But getting the below error while using org account :

Unable to create connection using an organizational account, please check to see if the data source path is correct and that the data source supports using an organizational account.

So is there any document which states when all the org account cannot be used for creating a connection.

And when using SP auth, getting the below error :

Connection could not be created. This may mean it is not accessible from this network or at this URI, or that a gateway is required to access this data source

You can refer the above posts and try reciprocating it