- A
Create a UI Policy that sets the 'resolution_notes' field to mandatory when state is 'Resolved'
UI Policies are client-side and can make fields mandatory based on conditions.
- B
Create a data policy with a condition on the state field
Why wrong: Data policies work server-side but don't make fields mandatory; they can enforce read/write access.
- C
Create a data lookup condition on the incident table
Why wrong: Data lookups don't enforce mandatory fields.
- D
Create a business rule that checks the condition and shows an error message
Why wrong: Business rules can prevent save but cannot make fields mandatory directly; also requires coding.
Question 271 of 520
Make Field Mandatory on Condition — UI Policy in ServiceNow | ServiceNow Certified System Administrator Explained
This SNOW-CSA practice question tests your understanding of application rules, acl and notifications. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An administrator wants to enforce that when the 'state' field of an incident is set to 'Resolved', the 'resolution_notes' field must be filled. Which approach should be used?
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
✓
Create a UI Policy that sets the 'resolution_notes' field to mandatory when state is 'Resolved'
Option A is correct because UI Policies run on the client side and can dynamically set field attributes like 'mandatory' based on conditions evaluated in real time as the user interacts with the form. When the 'state' field changes to 'Resolved', the UI Policy can immediately make the 'resolution_notes' field mandatory, ensuring the user cannot submit the form without filling it. This approach provides instant visual feedback and prevents submission without requiring a server round-trip.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 'resolution_notes' field to mandatory when state is 'Resolved'
Why this is correct
UI Policies are client-side and can make fields mandatory based on conditions.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a data policy with a condition on the state field
Why it's wrong here
Data policies work server-side but don't make fields mandatory; they can enforce read/write access.
- ✗
Create a data lookup condition on the incident table
Why it's wrong here
Data lookups don't enforce mandatory fields.
- ✗
Create a business rule that checks the condition and shows an error message
Why it's wrong here
Business rules can prevent save but cannot make fields mandatory directly; also requires coding.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Data Policies with UI Policies, thinking Data Policies can enforce client-side mandatory behavior, but Data Policies only enforce rules on the server side during record inserts/updates and do not affect the user's ability to submit the form.
Detailed technical explanation
How to think about this question
UI Policies execute in the browser using JavaScript and can leverage the 'g_form' API to set attributes like 'mandatory', 'readonly', or 'visible' on fields. They are triggered by field value changes (onChange) or on form load, and they run before the client-side 'onSubmit' event, allowing them to block submission if mandatory fields are empty. In contrast, Data Policies are enforced at the database layer via the 'before' business rules and can be bypassed by direct database updates or integrations, making UI Policies the correct choice for user-facing mandatory field enforcement.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the SNOW-CSA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Visual reference
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Application Rules, ACL and Notifications — study guide chapter
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FAQ
Questions learners often ask
What does this SNOW-CSA question test?
Application Rules, ACL and Notifications — This question tests Application Rules, ACL and Notifications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a UI Policy that sets the 'resolution_notes' field to mandatory when state is 'Resolved' — Option A is correct because UI Policies run on the client side and can dynamically set field attributes like 'mandatory' based on conditions evaluated in real time as the user interacts with the form. When the 'state' field changes to 'Resolved', the UI Policy can immediately make the 'resolution_notes' field mandatory, ensuring the user cannot submit the form without filling it. This approach provides instant visual feedback and prevents submission without requiring a server round-trip.
What should I do if I get this SNOW-CSA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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