Invalid role specified in the input. The 'role' field must be one of: 'system', 'assistant', 'user', or 'function'.

To resolve the error 'function_call' is not one of ['system', 'assistant', 'user', 'function'] - 'messages.2.role', you need to ensure that the role parameter in your API request is set to a valid value. Here are the steps to fix this:

• Update the role parameter to one of the allowed values: system, assistant, user, or function.

• Review your request payload to ensure it adheres to the expected format and contains all required fields.

• Verify that there are no typos or incorrect assignments in the role field.

By making these adjustments, you should be able to resolve the 400 status error related to the invalid role parameter.