Title: Error BadRequestError: 400 Additional properties are not allowed ('parsed', 'refusal' were unexpected)

[moti-malka]

Bug Report: BadRequestError 400 - Unexpected Properties in OpenAI API Response (Function Call to Azure AI Search)

Description

When making a function call to Azure AI Search using the OpenAI API, I
encountered a error: BadRequestError: 400 Additional properties are not allowed ('parsed', 'refusal' were unexpected) - 'messages.2'

Error Details

BadRequestError: 400 Additional properties are not allowed ('parsed', 'refusal' were unexpected) - 'messages.2' at APIError.generate (openai/error.mjs:58:20) at OpenAI.makeStatusError (openai/core.mjs:338:65) at OpenAI.makeRequest (openai/core.mjs:389:30) at process.processTicksAndRejections (node:internal/process/task_queues:95:5) at async ChatCompletionStreamingRunner._createChatCompletion (openai/lib/ChatCompletionStream.mjs:73:24) at async ChatCompletionStreamingRunner._runTools (openai/lib/AbstractChatCompletionRunner.mjs:252:36)

Expected Behavior

The OpenAI API should process the function call to Azure AI Search successfully without returning an error for unexpected properties.

Actual Behavior

The request fails with a BadRequestError due to additional properties that are not allowed in the response.

Steps to Reproduce

1. Make a function call to Azure AI Search via the OpenAI API.
2. Pass a valid payload.
3. Observe the error response.

Environment

• API Endpoint: OpenAI ChatCompletion Streaming
• Function Call Target: Azure AI Search
• Region: Sweden Central
• Library Version: OpenAI SDK 4.26.0
• Date of Occurrence: March 11, 2025

Additional Information

• Request ID: 0fe457bc-cdcf-4345-9f1c-d86ed3559fe5
• Error Type: invalid_request_error

[davidxw]

Can you please add a few more details in how you are doing this in Azure Chat? Have you created an Extension (functions call), and if so can you share the definition? Or have you modified the code?