Additional properties are not allowed. Unexpected properties encountered in the input payload.

The 400 status error in the Azure OpenAI API, specifically the message "Additional properties are not allowed ('question', 'question_variations' were unexpected) - 'messages.0'," indicates that the request contains properties that are not recognized or allowed by the API.

Here are the key reasons for this error:

• Invalid Request Configuration: The request includes fields or properties that do not match the expected schema or structure defined by the API. In this case, the properties question and question_variations are not expected in the messages section of the request.

• API Endpoint and Version Issues: There might be discrepancies between the request format and what is expected by the specific API endpoint or version being used. The API may have changed or have strict requirements for the request structure that are not being met.

• Content and Policy Violations: Although less likely in this context, it could also indicate that the content of the request is not compliant with the API's content management policies, leading to the rejection of the request.