How is error handling typically approached in Pega UI forms?

In Pega UI forms, error handling is primarily approached through the implementation of validation rules. Validation rules are designed to ensure that the input data meets specific criteria before it is processed. They can check for required fields, data formats, and logical conditions, thus preventing errors that could arise from invalid input. When a user submits a form, these rules can trigger error messages that inform the user about what needs to be corrected, enhancing the overall user experience.

The use of validation rules is an integral part of the development process in Pega, as it allows developers to define clear expectations for the data being entered. This proactive approach reduces the need for extensive error handling later in the workflow and helps maintain data integrity within the system. By addressing potential issues at the point of data entry, organizations can streamline processes and minimize disruptions caused by incorrect input.

While other options might seem relevant, they do not focus on the core mechanism for error handling in Pega UI forms. Custom JavaScript functions can add functionality but are not the primary method for handling errors. Input classes and service-level agreements serve different purposes within the application architecture and do not specifically address form input validation in the same way that validation rules do.