SNOW-CAD Core Application Development Practice Question
A service catalog item has a variable set that includes a reference field to the 'cmdb_ci' table. The requirement is to show only 'Server' type CI's in the reference field. Which approach should be used?
⚠ Common exam trap
Many exam-takers confuse UI Policies or Data Policies with reference qualifiers, thinking they can filter reference field data, when in fact only a Reference Qualifier (or a derived condition) directly controls which records are available for selection.
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
✓
Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'.
A Reference Qualifier on a variable definition allows you to filter the records displayed in a reference field using a condition string. By setting the condition 'sys_class_name=Server', only CI records with that specific sys_class_name will appear, which directly meets the requirement to show only 'Server' type CIs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a UI Policy that sets the field as read-only and uses a condition to filter.
Why it's wrong here
UI Policies do not filter reference fields; they control visibility and mandatory state.
- ✓
Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'.
Why this is correct
Reference Qualifiers directly filter the records shown in the lookup.
- ✗
Write a Client Script on load that sets the reference qualifier using setRefQual().
Why it's wrong here
Client-side setRefQual works but may not be as reliable as server-side reference qualifier for initial load.
- ✗
Use a Data Policy to enforce a condition on the field.
Why it's wrong here
Data policies enforce mandatory/read-only, not filtering.
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