Problem with Refreshing Dataset after Parameter Change with Service Principal

Thanks lbendlin .

After the 'Takeover Dataset' step, I tried the Datasources Update endpoint

https://api.powerbi.com/v1.0/myorg/groups/{workspace_id}/datasets/{dataset_id}/Default.UpdateDatasources 

with the following request body:

{
    'updateDetails': [
        {'datasourceSelector':
         {
             'datasourceType': 'MySql',
             'connectionDetails': {
                 'server': 'demo_server_01',
                 'database': 'demo_database_01'
            }
         },
         'connectionDetails': {
             'server': 'demo_server_01',
             'database': 'demo_database_01'
         }
        }
    ]
}

But received the following message:

{"error":{"code":"InvalidRequest","message":"The given connection details for selector # are invalid"}}

Is there any information in the request body that I need to add or modify?