Header Trailer Validation Tool for Batch Files

The validation logic is extracted from individual programs into a separate, reusable component. The system reads control cards that define validation rules and applies them independently to each batch file, separating the validation functionality from the main program logic. This allows validation to be performed without modifying existing programs.

A universal validation framework is implemented that can handle multiple file formats and validation rules through control cards. The same validation mechanism works across different applications and file types by simply changing the control card parameters, eliminating the need to write custom validation code for each program.

Validation complexity is extracted into a separate control card-based system. Instead of embedding validation logic within each program, the system uses external control cards to define validation rules, keeping the main programs simple and reducing overall system complexity.

Control cards serve as an intermediary between the validation requirements and the processing logic. They provide a configuration layer that separates the complexity of validation rules from the execution logic, making the system easier to manage and modify.

The system performs self-service validation by automatically reading control cards and applying validation rules without manual intervention. The validation process is automated through the control card mechanism, which allows the system to configure and execute validation independently for each file.

Validation rules are prepared in advance in control cards before processing batch files. This preliminary configuration allows the system to efficiently apply pre-defined validation logic during file processing, eliminating the need for manual validation setup and improving processing efficiency.