Question 35

Question

An app builder wants to update a field on the parent record when a child record connected via
lookup is deleted.
What automation should the app builder use?

Accepted Answer

Apex code

Sara F. · Answer

C is right here because only Apex triggers can catch a delete event on the child in a lookup, not master-detail. Process Builder and Flow can't start from a deleted child on lookup, so they won't help. Pretty sure that's why they want Apex code for this one. Feel free to push back if you have another scenario.

Aaron R. · Answer

B , since Process Builder can react to record changes, pretty sure I saw similar on an old mock.

Jason V. · Answer

Doesn't Process Builder cover deletes too? I'd pick B. Workflow is the trap here, can't trigger on delete.

SharpCandidate4074 · Answer

C imo. You need Apex trigger after delete for lookups, since flows and PB can't handle deletes on lookup children.

Platform App Builder CRT-403 Real Exam Questions [October 2026 Update] Quiz

An app builder wants to update a field on the parent record when a child record connected via lookup is deleted. What automation should the app builder use?

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