SNOW-CAD Creating and customizing tables and data Practice Question
An organization has a custom table 'u_incident_task' that extends 'task'. They need to allow users to create records in this table from the 'Incidents' module. The 'u_incident_task' table should appear as a related list on the incident form. However, the related list is not showing the 'New' button. What is the most likely cause?
⚠ Common exam trap
ServiceNow often tests the misconception that extending a table or having the correct role is sufficient for related list functionality, but the critical missing piece is the reference field that establishes the parent-child relationship.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
There is no reference field on 'u_incident_task' pointing to the incident table
The 'New' button appears on a related list only when there is a reference field on the target table (u_incident_task) that points back to the source table (incident). Without this reference field, the platform cannot automatically populate the parent record's sys_id when creating a new child record, so it suppresses the 'New' button. This is a core requirement for related list creation in ServiceNow.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
There is no reference field on 'u_incident_task' pointing to the incident table
Why this is correct
A reference field is needed to associate records and enable creation.
- ✗
The table is in a different application scope
Why it's wrong here
Scope does not prevent the New button.
- ✗
The table does not extend 'incident'
Why it's wrong here
Extending 'task' is sufficient for related lists.
- ✗
The user does not have the required role
Why it's wrong here
Roles affect access but not the button's existence.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SNOW-CAD practice question is part of Courseiva's free ServiceNow certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SNOW-CAD exam.