Connecting Fabric Data Agent via Service Principal or Managed Identities

Hi amankaran03,

Thanks for sharing the details. The error message "invalid_deployment" usually occurs when the API deployment linked to the Fabric Data Agent (AI Skill) is not found or temporarily unavailable. This can happen for a few reasons:

1. Recent Deployment Delay – If the deployment was created or updated recently, it may take a few minutes to fully provision. Try waiting 5–10 minutes and re-triggering the workflow.

2. Deployment Expiration or Removal – Check if the associated AI/ML deployment or endpoint is still active in your Fabric workspace. Sometimes, deployments get deleted or invalidated if the linked model/environment was changed.

3. Agent Configuration – Verify the Data Agent settings in Fabric (under AI Skills / Data Agent connections) to ensure the API deployment is still correctly mapped and hasn’t lost its link.

4. Region / Resource Issue – Very rarely, backend service issues in a specific region can cause this. 

Next steps to try:

• Refresh or re-deploy the Data Agent and re-associate it with the correct deployment.

• If you have multiple deployments, ensure you’re pointing to the right one.

• If nothing has changed on your side and it was working fine earlier, it might be a transient issue. In that case, raising a support ticket with Microsoft Fabric support would be the best option, especially since you’re blocked on timelines.

Hope this helps get your workflow back on track!