Authentication not granted for service principal token in MS Fabric API using Python

I am trying to connect to OneLake API in Microsoft Fabric using Python in VScode. So far I have * Registered an app in Azure with these API permissions * Then created a secret for my service principal * Then I try to get the token with this function, using azure.identity: from azure.identity import ClientSecretCredential, AuthenticationRequiredError def get_access_token(app_id, client_secret, directory_id): try: # Create the ClientSecretCredential using the provided credentials credential = ClientSecretCredential( client_id=app_id, client_secret=client_secret, tenant_id=directory_id #scope="https://storage.azure.com/.default" ) # Use the credential to get the access token token = credential.get_token("https://storage.azure.com/.default").token return token, credential except AuthenticationRequiredError as e: print("Authentication failed. Please check your credentials.") raise e except Exception as e: print("An error occurred while getting the access token:") print(str(e)) raise e access_token, credential = get_access_token(app_id, client_secret, directory_id) It seems I get the token fine and all. But there is something wrong with the permissions or scope or access. Because when I run this function to check for connection i get status code 400 def check_connection_with_onelake(access_token): base_url = "https://onelake.dfs.fabric.microsoft.com/9c3ffd43-b537-4ca2-b9ba-0c59d0094033/Files/sample?resource=file" token_headers = { "Authorization": "Bearer " + access_token } try: response = requests.put(base_url, headers=token_headers) if response.status_code == 200: print("Connection with OneLake is successful.") else: print("Failed to connect with OneLake. Status code:", response.status_code) except requests.exceptions.RequestException as e: print("An error occurred while checking the connection:", str(e)) # Assuming 'access_token' is already defined and contains a valid access token check_connection_with_onelake(access_token) * I also added the app's service principal to users in the Fabric workspace as an admin Where am I missing access and how do I grant the correct access? references: https://learn.microsoft.com/en-us/fabric/onelake/onelake-access-api https://amitchandak.medium.com/on-premise-python-code-to-local-sql-server-data-to-microsoft-fabric-lakehouse-using-token-d15b8795e349