Error Handling in Progress 4GL (OpenEdge ABL) refers to the techniques used to detect, manage, and respond to runtime errors in applications. It ensures that programs continue running smoothly or exit gracefully when unexpected issues occur. Progress 4GL uses structured error-handling mechanisms such as ON ERROR, CATCH, THROW, and RETURN ERROR to manage exceptions. Developers can capture system errors, validation failures, and database issues to provide meaningful messages or corrective actions. Proper error handling improves application stability, reliability, and user experience. It is essential for building robust enterprise applications that can handle failures without data loss or system crashes.
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