Cognative Services - Form Recognizer (specified model not found or not ready)

Question

Hi,

We are trying to integrate the Azure Form Recognizer technology into our product and can't seem to get this last step to work. It just happens to be the bit that does the actual work .:)

We have used Form Recognizer Studio (API version 2022-06-30-preview) to build and train a model successfully.

We are building in .Net 4.8 C# and using the client library Azure.AI.FormRecognizer Latest Stable 3.1.1 (have also tried pre-release 4.0.0-beta.4).

Sample of the code code:

                // Establish an Azure Client object  
                var recognizerClient = new FormRecognizerClient(new Uri(endpoint), new AzureKeyCredential(key));  

                // Seek to the start of the stream  
                DocumentStream.Seek(0, SeekOrigin.Begin);  

                // Start the recognition process  
                var operation = recognizerClient.StartRecognizeCustomForms(  
                    ModelId, DocumentStream,  
                    new RecognizeCustomFormsOptions { ContentType = contentType });  

                // Wait for the recognition process to complete  
                Collection = await operation.WaitForCompletionAsync();  
  

Exception occurs when the StartRecognizeCustomForms function is called.

Exception message returned by the SDK package.

Specified model not found or not ready, Model Id: {Model GUID as listed in the models list from Form Recognizer Studio}
Status: 400 (Bad Request)
ErrorCode: 1001

Answer 1

@Paul Mac The mapping of API versions to SDK is as mentioned below:

SDK Version -> 3.1.X -> API Version -> 2.0,2.1
SDK Version -> 4.0.0-beta.4 -> API Version -> 2.0, 2.1, 2022-06-30-preview

This is documented on this page for reference.

So, using the 4.0.0-beta.4 SDK version is appropriate in your case since you have used API version 2022-06-30-preview for training your model.

With respect to the error, I think this is a model issue in the backend since you are seeing the error with the latest beta SDK version too.
You should be seeing the same behavior with the form recognizer studio too. Did you get a chance to test from the studio?

If this error persists, I recommend trying a different model id in your code and check if it is able to use the client to get a successful result.

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