Verify your API keys, check the API documentation for changes, and ensure you’re handling request/response correctly.

Troubleshooting issues with third-party API integration in your Node.js application is vital for ensuring smooth interactions with external services, so a structured approach can help resolve these problems efficiently. Start by verifying your API keys and authentication tokens; ensure that they are correct and have the necessary permissions for the endpoints you’re trying to access. Check the API documentation for any recent changes or deprecations that may affect your integration; APIs often evolve, and keeping up to date can prevent unexpected issues. Ensure you’re handling requests and responses correctly; verify the HTTP methods you’re using, the data formats expected by the API, and any required headers. Implement error handling for API calls to capture and log any errors returned from the API, which can provide insights into what might be going wrong, such as rate limiting or invalid requests. If possible, test your API integration using tools like Postman or curl to isolate issues and confirm that your application code is correctly implementing the API’s requirements. Consider monitoring your application logs for any patterns or specific errors that arise during API calls, as these can help identify ongoing issues with integration. By systematically reviewing these areas, you can effectively troubleshoot and resolve third-party API integration issues in your Node.js application.