Rules and Triggers can be stored in the LANSA Repository at both the field level and file level.
It is important to understand how the rules and triggers work at both levels and how the levels work together. Refer to Rules and Triggers Development Concepts in the Developer Guide.
Both field and file level details are found in Rules and Triggers.
Field Rules and Triggers Tab in the User Guide
REP003 - Validation Rules in the Visual LANSA Tutorials for further information in setting rules.