The input provided is not of the expected type 'array'. Ensure the structure of the data matches the required format.

The 400 status error in the Azure OpenAI API can be caused by several reasons:

Incorrect API Configuration

The error could be due to incorrect or mismatched API keys, headers, or other configuration issues. For example, the API key used in the code might not match the one listed in the OpenAI Developer Dashboard, or the headers, especially the Authorization field, might not be correctly set.

Invalid Request Parameters

The request might contain unrecognized or invalid parameters. For instance, using the max_tokens parameter with models that require max_completion_tokens (such as the "o1" model series) can trigger a 400 error.

Rate Limiting and Throttling

Exceeding the rate limits set by OpenAI can result in a 400 error. If the API is being called too frequently, it may hit the rate limits imposed by OpenAI.

Data Payload Size

The data payload being sent might exceed the maximum allowed size, leading to a 400 error. Large prompts or data chunks need to be broken down into smaller, manageable sizes.

Content Filtering

The prompt might be triggering Azure OpenAI's content management policy, which filters out certain types of content. This can result in a 400 error if the prompt violates these policies.

Malformed Resource ID or Managed Identity Issues

In scenarios using managed identities for authentication, a 400 error can occur if the resource URI or managed identity configuration is incorrect. This includes issues like malformed resource IDs or missing necessary roles.

Incorrect Data Type or Structure

The request data might not conform to the expected type or structure. For example, if a parameter is expected to be an array but is not provided as one, it can cause a 400 error.