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SNOW-CAD Core Application Development Practice Question

Exhibit

Refer to the exhibit.

Business Rule script:
(function executeRule(current, previous /*null when async*/) {
    var gr = new GlideRecord('incident');
    gr.addQuery('category', 'network');
    gr.query();
    while (gr.next()) {
        gr.setValue('priority', 2);
        gr.update();
    }
})(current, previous);

The Business Rule above runs on the 'incident' table. It is set to run 'before' update. What is the most likely issue with this script?

⚠ Common exam trap

ServiceNow often tests the concept of recursive loops in Business Rules, and the trap here is that candidates focus on syntax or object usage (like 'current' vs 'gr') instead of recognizing that any update to the same table within a before/after update rule will cause recursion unless explicitly prevented.

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

✓

The script will cause a recursive loop because it updates incident records within a Business Rule that runs on the same table.

Updating the same table (incident) within a 'before update' Business Rule that runs on that table creates a recursive loop. Each time the script calls gr.update() on an incident record, it triggers the same Business Rule again, leading to infinite recursion until the system enforces a governor limit or stack overflow. ServiceNow detects and prevents such loops by throwing an error, but the design is fundamentally flawed.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
The script should use 'current' instead of 'gr' to update records.
Why it's wrong here
The script is intended to update multiple records, not just the current one.
✗
The script has a syntax error: missing semicolon after the while loop.
Why it's wrong here
The while loop does not require a semicolon after the closing brace.
✓
The script will cause a recursive loop because it updates incident records within a Business Rule that runs on the same table.
Why this is correct
Updating incident records inside a before update Business Rule on incident can trigger the rule again.
✗
The script does not commit the changes because it uses 'gr.update()' instead of 'current.update()'.
Why it's wrong here
gr.update() commits changes to the database.

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SNOW-CAD Core Application Development Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

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