Debugging payment APIs can be stressful. Real money is at stake, and sandbox environments don't always perfectly mimic production. Here's how to navigate the common pitfalls.
1. Missing Webhook Handlers
One of the most common issues is failing to correctly handle asynchronous webhooks. Your application might think a payment failed because the initial request timed out, even though it was successful.
đ Debug Tip: Use tools like localtunnel or ngrok to test your webhook handlers locally before deploying.
2. Incorrect Error Handling
Are you handling card declines vs. network errors vs. fraudulent blocks correctly? Each requires a different user response.
Conclusion
Stay calm and use comprehensive logging. Payment debugging is all about visibility into the transaction flow.