Why would you use an error handler in a Pega application?

Using an error handler in a Pega application is crucial for addressing unhandled exceptions in workflows. An error handler serves as a mechanism to gracefully handle errors that arise during the execution of processes or workflows, ensuring that the application can respond appropriately instead of failing abruptly.

When an error occurs in a workflow and is not managed, it can lead to disruptions that may affect user experience, data integrity, and system stability. By implementing an error handler, developers can define specific actions to be taken when an exception occurs, such as logging the error, notifying users, or redirecting the flow to an alternative path. This results in a more robust application that can handle unforeseen issues while still maintaining business continuity.

This approach allows for improved debugging and troubleshooting since error handlers can capture context about what went wrong, aiding developers in diagnosing problems effectively. By centralizing error management, it also enhances maintainability and can even lead to improved system performance in the long run as proper error handling reduces potential crash points in the application.