The answer is to create a UI Policy that adds a message when the condition state=Closed is true. This is correct because UI Policies are the declarative, no-script feature in ServiceNow’s UI16 that allow you to display a message—informational, warning, or error—based on field value changes, running entirely on the client side without custom scripting. On the ServiceNow Certified Application Developer (CAD) exam, this question tests your understanding of client-side declarative configuration versus scripted alternatives like Client Scripts or ACLs; a common trap is choosing a Client Script because it can also show messages, but the question explicitly requires “without custom scripting,” making UI Policies the only valid choice. Remember the memory tip: “UI Policy for a message, no script needed—just a condition and a message.”
SNOW-CAD User Interface Development Practice Question
This SNOW-CAD practice question tests your understanding of user interface development. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
A developer is designing a custom form in the standard UI (UI16) and needs to add a message that displays only when the 'state' field is 'Closed'. Which feature should be used to achieve this without custom scripting?
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 adds a message when the condition state=Closed is true.
UI Policies are the correct declarative feature in UI16 to show a message based on a field value without custom scripting. They run on the client side and can display informational, warning, or error messages when a specified condition (like state=Closed) is met, making option A the appropriate choice.
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 adds a message when the condition state=Closed is true.
Why this is correct
UI Policies can conditionally display messages without scripting.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a form section and set its condition via the 'Conditional' property.
Why it's wrong here
Form sections cannot be conditionally displayed based on field values.
✗
Write a Client Script that shows a message when state changes to Closed.
Why it's wrong here
Requires scripting; not the low-code approach.
✗
Use a UI Macro with a condition that checks the state field.
Why it's wrong here
UI Macros require scripting and are not low-code.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse UI Policies with Client Scripts, thinking that any client-side behavior requires scripting, when in fact UI Policies provide a no-code alternative for simple conditional actions like showing messages.
Detailed technical explanation
How to think about this question
UI Policies in ServiceNow are evaluated client-side using a declarative condition builder, which translates to a JavaScript expression behind the scenes. When the condition is true, the UI Policy can set field attributes (like mandatory, visible) and display messages of type 'info', 'warning', or 'error' in a banner at the top of the form. This approach avoids the need for client scripts and leverages the platform's built-in no-code capabilities.
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-CAD 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.
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.
User Interface Development — This question tests User Interface Development — 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 adds a message when the condition state=Closed is true. — UI Policies are the correct declarative feature in UI16 to show a message based on a field value without custom scripting. They run on the client side and can display informational, warning, or error messages when a specified condition (like state=Closed) is met, making option A the appropriate choice.
What should I do if I get this SNOW-CAD 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.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A developer needs to display a warning message to the user when the 'priority' field is changed to '1 - Critical'. Which TWO client-side implementations can achieve this?
easy
A.Business Rule with 'when to run' set to 'before' and script to call g_scratchpad.message
✓ B.UI Policy with condition: 'Priority changes' and action script to call g_form.showFieldMsg()
C.onLoad client script that checks the current value of priority and shows a message
D.Data Policy with condition on priority field and message set
✓ E.onChange client script with a condition to check newValue and call g_form.showFieldMsg()
Why B: Option B is correct because a UI Policy with the condition 'Priority changes' triggers an action script when the priority field is modified, allowing the use of `g_form.showFieldMsg()` to display an inline warning message on the field. Option E is correct because an onChange client script fires when the 'priority' field changes, and within it you can check `newValue` against '1 - Critical' and call `g_form.showFieldMsg()` to show the warning. Both are client-side implementations that respond to field changes without a server round-trip.
Last reviewed: Jun 11, 2026
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