What should you search for using the Tracer tool to determine the cause of an error in your application?

Using the Tracer tool to determine the cause of an error in your application is best done by searching for the first FAIL status. This is because the first FAIL status indicates the initial point at which an error occurred during the processing of a request. Identifying the first instance of failure allows you to trace back through the steps leading to that failure and understand the context and conditions that caused it.

When you locate the first FAIL status, you can review the steps that were executed prior to the failure. This helps pinpoint specific actions, processes, or data that may be contributing to the problem. By understanding what preceded the failure, you can more effectively troubleshoot and diagnose issues within the application.

In contrast, checking for the last success status may not provide you with enough context on what went wrong right before the error occurred. The final REDIRECT status is typically an indication of navigation or actions taken after processing, which may not reveal the cause of the issue itself. Looking for the initial PROCESS status does not pinpoint any failures and may also lead to confusion about where the breakdown occurred. Therefore, focusing on the first FAIL status is the most effective way to diagnose errors in your application.