Unable to Use Custom Analyzer in Azure AI Content Understanding API - ModelNotFound Error

Kaja Sherief 95

I’m trying to use the REST API for Azure AI Content Understanding, specifically to create and use a custom audio analyzer. While everything works fine in the UI, I’m running into an issue with the API.

I followed the steps in the Azure documentation to create a custom analyzer. The API call to create the custom analyzer returns a 201 Created status code, so it seems to be successfully created.

However, when I try to analyze a file using this custom analyzer, the API returns a ModelNotFound error.

Could you please help me understand why this is happening and how I can resolve it? I want to ensure the custom analyzer is properly recognized and works for analyzing files through the API.

santoshkc 12,035 Reputation points Microsoft Vendor

2025-01-22T15:02:00.7166667+00:00

Hi @Kaja Sherief,

Thank you for reaching out to Microsoft Q&A forum!

It seems the ModelNotFound error could be caused by a mismatch in the custom analyzer's configuration or its deployment. First, ensure that the custom analyzer was successfully created by checking the operation status via a GET request on the operation URL provided after the PUT request. If the status is not "succeeded", the analyzer hasn't fully deployed.

Also, verify that the analyzerId used in your file analysis request matches exactly the one used during the creation of the analyzer. Double-check that the file URL is publicly accessible or has the necessary permissions, such as a valid SAS token if using Azure Blob Storage.

Additionally, ensure the region of the API endpoint matches the region where the analyzer was created, as custom analyzers are region-specific. Allow some time for the analyzer to be fully deployed before performing the file analysis. If the issue continues, feel free to reach out for further assistance or to contact Azure Support for a deeper investigation.Thank you.
santoshkc 12,035 Reputation points Microsoft Vendor

2025-01-23T12:32:19.3433333+00:00

Hi @Kaja Sherief,

Following up to see if the given response was helpful. Thank you.
santoshkc 12,035 Reputation points Microsoft Vendor

2025-01-24T12:29:10.43+00:00

Hi @Kaja Sherief,

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution, please do share that same with the community as it can be helpful to others.

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Unable to Use Custom Analyzer in Azure AI Content Understanding API - ModelNotFound Error

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