Invalid schema detected for a specified function. Please ensure all required items are included in the array schema.

The 400 status error in the Azure OpenAI API, specifically the "Invalid schema for function" error, is likely due to several reasons:

Invalid or Missing Schema

The error indicates that the schema provided for the email_addresses property is incorrect or missing the required items array schema. This suggests a mismatch between the expected and provided data structure.

Incorrect Request Payload

The payload you are sending to the API might not conform to the expected JSON schema, which could be due to incorrect formatting, missing required fields, or using unrecognized request arguments.

Model-Specific Parameters

Different models in OpenAI may have specific parameter requirements. For example, some models may require certain parameters that are not included in your request, leading to an invalid schema error.

Header and Content-Type Issues

The error could also be due to incorrectly set headers, particularly the Content-Type header, which should be set to application/json to match the server's expectations.