This SNOW-CAD practice question tests your understanding of creating and customizing tables and data. 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.
current.u_field.setValue('test');
current.update();Refer to the exhibit. A developer wrote this script in a Business Rule on the 'incident' table. The script runs but the 'u_field' value is not saved. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
current.u_field.setValue('test');
current.update();The script has a syntax error
Why wrong: The syntax is valid.
The setValue method does not exist on GlideElement
Why wrong: GlideElement does have a setValue method.
The u_field is defined as read-only
Read-only fields ignore setValue.
The method should be setDisplayValue, not setValue
Why wrong: setValue is used for stored values.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The u_field is defined as read-only
Option B is correct. If the field is read-only (e.g., due to a dictionary attribute or ACL), the setValue method fails silently. Option A is wrong because setValue exists on GlideElement. Option C is wrong because setValue is the correct method. Option D is wrong because the script is syntactically correct.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The script has a syntax error
Why it's wrong here
The syntax is valid.
The setValue method does not exist on GlideElement
Why it's wrong here
GlideElement does have a setValue method.
The u_field is defined as read-only
Why this is correct
Read-only fields ignore setValue.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
The method should be setDisplayValue, not setValue
Why it's wrong here
setValue is used for stored values.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SNOW-CAD ACL questions on filtering logic and placement.
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FAQ
Creating and customizing tables and data — This question tests Creating and customizing tables and data — Standard ACLs match source addresses..
The correct answer is: The u_field is defined as read-only — Option B is correct. If the field is read-only (e.g., due to a dictionary attribute or ACL), the setValue method fails silently. Option A is wrong because setValue exists on GlideElement. Option C is wrong because setValue is the correct method. Option D is wrong because the script is syntactically correct.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SNOW-CAD ACL questions on filtering logic and placement.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Standard ACLs match source addresses.
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Last reviewed: Jun 24, 2026
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