Business Rule Best Practices for ServiceNow
Write ServiceNow business rules (before/after/async/display) — current vs previous, changesTo/changesFrom, recursion avoidance, setAbortAction, and async dispatch for heavy work.
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Write ServiceNow business rules (before/after/async/display) — current vs previous, changesTo/changesFrom, recursion avoidance, setAbortAction, and async dispatch for heavy work.
Write ServiceNow client scripts (onLoad/onChange/onSubmit/onCellEdit) using g_form, g_user, GlideAjax, field visibility/mandatory toggles, and validation with debounced server calls.
Write ServiceNow Script Includes — Class.create utility classes, AbstractAjaxProcessor client-callable APIs for GlideAjax, inheritance via Object.extendsObject, and scoped-app patterns.
Build ServiceNow UI Actions (form/list buttons, context menus) and UI Policies (conditional mandatory/visible/read-only) with server/client scripts and GlideAjax. Use snow_analyze_form before modifying forms.
Build Service Portal widgets (sp_widget) with synchronized server/client/HTML — data.* initialization, ng-click + controller method matching, c.server.get action handlers, and Angular directive usage.
Create ServiceNow scheduled jobs on sysauto_script — daily/weekly cron patterns, batch processing with time/runtime limits, conditional execution, error notifications, and metrics recording.
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