SALESFORCE-PD1 User Interface Practice Question
Which TWO actions should a developer take when handling errors returned by an imperative Apex call in a Lightning Web Component? Choose 2 answers.
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
✓
Extract the error message from the error object structure (e.g., error.body.message).
Errors from imperative Apex should be caught in a .catch() block and processed or displayed using a toast notification or error banner.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Call ApexPages.addMessage() to display the error on screen.
Why it's wrong here
ApexPages is for Visualforce, not LWC.
- ✓
Extract the error message from the error object structure (e.g., error.body.message).
Why this is correct
Standard Salesforce error body structure format.
- ✗
Rethrow the error as an unhandled Java exception.
Why it's wrong here
Salesforce does not use Java.
- ✓
Catch the error using a .catch() block or try/catch with async/await.
Why this is correct
Standard JavaScript error handling for promises.
- ✗
Use standard window.alert() for all error messaging.
Why it's wrong here
window.alert is poor UX and discouraged in LEX.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 practice question is part of Courseiva's free Salesforce certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SALESFORCE-PD1 exam.