CAD ServiceNow Certified Application Developer - ServiceNow Free Practice Exam Questions (2026 Updated)

https://developer.servicenow.com/dev.do#!/learn/learning-plans/tokyo/new_to_servicenow/app_store_learnv2_automatingapps_tokyo_use_application_properties

g_user is a global object available only in the client-side environment (Client Scripts, UI Policies, UI Actions).

From Development Handbook 4.0.4, p. 204:

“g_user is only available client-side. It returns session-specific info like roles and user ID. Not usable in Business Rules or Script Includes.”

In ServiceNow, extending a table means creating a new table (child class) that inherits properties from an existing table (parent class). This inheritance includes fields, business logic, and other configurations, allowing for efficient reuse and customization.

Key Points:

Field Inheritance: The child table inherits all fields from the parent table. For example, if you extend the Task table, your new table will include fields like " short_description " and " priority. "

Business Logic Inheritance: The child table also inherits business rules, client scripts, and other logic defined on the parent table, ensuring consistent behavior across related tables.

Access Controls: Access controls are not ignored; instead, the child table inherits the parent table ' s access controls. However, you can define additional access controls specific to the child table as needed.

Customization: While the child table inherits many properties, you can add new fields, scripts, and behaviors to tailor it to specific requirements without affecting the parent table.

Inbound email matching uses Watermarks and Subject lines (with record numbers like INC0010001) to associate emails with existing records.

From Email Handling Docs:

“ServiceNow uses Watermark IDs and subject lines containing record numbers to find the corresponding task or record when processing inbound email.”