API error handling is the process of identifying and responding to specific errors from API responses to resolve issues quickly, and it involves pinpointing solutions and implementing them. API responses typically provide error codes and messages that can help diagnose the issue, and effective error handling processes are crucial for swift diagnosis and resolution. To implement error handling effectively, it's essential to configure monitoring systems to capture additional information beyond status codes and error messages, use exponential backoffs for server-side issues, integrate monitoring systems with communication platforms, document each error handling process, and review each process frequently. By doing so, teams can manage API errors efficiently, reduce failed requests, and save time and resources. Merge, a Unified API, offers features such as automatic issue detection, step-by-step remediation guidance, and fully-searchable logs to help manage API errors with ease.