SNOW-CSA Application Rules, ACL and Notifications Practice Question
A business rule is configured to run 'before' a record is updated. If the business rule sets a field value and then a subsequent 'after' business rule also updates the same field, what will be the final value stored in the database?
⚠ Common exam trap
A common mix-up: candidates assume 'before' rules have final authority because they run earlier, but ServiceNow's execution order ensures 'after' rules override 'before' rules for the same field.
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 value set by the 'after' business rule
In ServiceNow, business rules execute in a defined order: 'before' business rules run first, followed by 'after' business rules. When both a 'before' and an 'after' business rule update the same field, the 'after' business rule executes later in the transaction and its value overwrites the 'before' business rule's value. The final value stored in the database is therefore the one set by the 'after' business rule, because the database write occurs after all business rules have completed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Both values are stored in a history field
Why it's wrong here
No automatic history field for this.
- ✗
The database rejects the second change
Why it's wrong here
There is no rejection; the second update is allowed.
- ✓
The value set by the 'after' business rule
Why this is correct
The 'after' rule runs after the initial save and can modify the record again.
- ✗
The value set by the 'before' business rule
Why it's wrong here
The 'after' rule overwrites it with a second update.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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