An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'. Ensure there are response messages for all tool_call_ids.

To fix the 400 error caused by the absence of response messages for tool_call_ids, you need to ensure that each tool call is followed by the appropriate response message. Here are the key steps to resolve this issue:

Ensure that for every tool_call_id in your assistant message, there is a corresponding tool message that responds to that specific tool_call_id.

• Verify that all tool calls have matching response messages.

• Reconstruct the conversation flow to include the necessary tool responses.

• Update your code to generate or include these response messages accurately.

By aligning your tool calls with the required response messages, you can prevent the API from returning a 400 error.