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Prevent Account Name Changes — Apex trigger practice problem · ForceChallenges

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Prevent Account Name Changes

HardApex Triggeron Account 50 ptsCreated Oct 13, 2026

After an Account has been created, do not allow its Name to change. Other Account fields can still be updated. Use Trigger.oldMap to compare the old and new names.

Constraints

Keep the trigger bulk-safe. Do not run SOQL or DML inside a loop.

AccountTrigger.oldMapBefore Update

CodeApex

Loading editor…

Account name is locked

Seed data

Account× 1 rows

Name: Original

DML under test

updateAccountWHERE Name = 'Original'

SET

Name: Changed

Expected