When applying an extension to an existing table, which statement is not true?

• A. The new table inherits the functionality built into the parent table
• B. The extension can add new fields to the existing table
• C. Extensions can alter the behavior of the table
• D. The extension affects access controls to the table

Answer: (A)

When you extend a table in ServiceNow, you create a child table that sits in the same inheritance path as the parent. The child automatically inherits the parent’s fields, so you don’t have to redefine those common data elements.

But the statement about inheriting the functionality built into the parent isn’t true. Functional behavior like business rules, client scripts, UI policies, and access controls aren’t automatically carried over to the child table. If you want the same behaviors, you need to recreate or tailor them for the child. You can, however, add new fields to the child and implement its own rules or logic to customize behavior, and you can define or adjust ACLs on the child to control access. That’s why the option claiming automatic inheritance of the parent’s functionality is not accurate.