Invalid value provided. Supported values include: 'system', 'assistant', 'user', 'function', 'tool', and others depending on context.

The 400 status error in the Azure OpenAI API, specifically the error message "Invalid value: 'Tel...st.'. Supported values are: 'system', 'assistant', 'user', 'function', and 'tool'," is likely due to an issue with the messages array in your request payload.

Here are the key reasons for this error:

• Incorrect Role in Messages: The error indicates that the role field in one of the messages does not match the supported values ('system', 'assistant', 'user', 'function', or 'tool').

• Invalid Request Configuration: The request payload may contain invalid or mismatched values for required properties, such as the role field in the messages array.

This error suggests that the payload you are passing to the API is not conforming to the expected schema for the messages array.