business-rule-patterns
Business Rule Best Practices for ServiceNow
Business Rules are server-side scripts that execute when records are displayed, inserted, updated, or deleted.
When to Use Each Type
| Type | Timing | Use Case | Performance Impact |
|---|---|---|---|
| Before | Before database write | Validate, modify current record | Low |
| After | After database write | Create related records, notifications | Medium |
| Async | Background (after commit) | Heavy processing, integrations | None (background) |
| Display | When form loads | Modify form display, set defaults | Low |
Available Objects
// In Business Rules, these are always available:
current // The record being operated on
previous // The record BEFORE changes (update/delete only)
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