Business Rules are used to enforce mandatory data on a form.

Business Rules are primarily for backend automation and logic, while UI Policies or Data Policies are the designated features for enforcing mandatory fields on a form.

Business Rules execute server-side logic when records are inserted, updated, deleted, or queried, but they are not the primary mechanism for making form fields mandatory. UI Policies or Data Policies are specifically designed for enforcing mandatory data requirements directly on a form or during data operations.