DEX-403E Exam Guide, Objectives & Preparation

Exam Overview

Exam Code	DEX-403E
Exam Name	Salesforce Declarative Development for Platform App Builders in Lightning- Extended
Vendor	Salesforce
Total Questions	234
Last Updated	26-Oct, 2026

Free DEX-403E Questions Get Premium Access

Why CertsPoint?

Latest & Verified Questions
Detailed Explanations
Regular Updates
Full-Length Practice Tests
Boost Your Exam Confidence

PDF Study Materials

Downloadable guides and resources

Practice Tests

Full-length tests with real exam experience

Progress Tracking

Monitor your performance and improvement

Study Anywhere

Access on desktop, tablet, and mobile

Excellent

4.6 (398 Up Votes)

Secure Payment Privacy Protected Money Back Guarantee

Free DEX-403E Practice Questions

Explore 5 free practice questions for the Salesforce DEX-403E exam and review the answers and explanations to support your preparation.

Question 1
Single answer

DreamHouse Realty wants to make sure an Opportunity has a field Expected_Close_Date_c populated before it is allowed to enter the qualified stage. How should an app builder solution this request?
- Option A:
  Record Type
  Correct
- Option B:
  Validation Rule
  Correct
- Option C:
  Activity History
  Correct
- Option D:
  Page Layout
  Correct
Show Answer & Explanation Hide Answer & Explanation

Correct Answer: B
Question 2
Single answer

An app builder notices several Accounts converted from Leads are missing information they expected to be caught via Account validation rules. What could be the source of this issue?
- Option A:
  The lead settings are unchecked to require validation for converted leads.
  Correct
- Option B:
  Account validation rules fail to validate on records converted from a lead.
  Correct
- Option C:
  The lead settings are allowing users to intentionally bypass validation rules.
  Correct
- Option D:
  Lead validation rules fail to validate on records when they are being converted.
  Correct
Show Answer & Explanation Hide Answer & Explanation

Correct Answer: B
Question 3
Multiple answers

An App Builder at UVC would like to prevent users from creating new records on an Account related list by overriding standard buttons. Which two should the App Builder consider before overriding standard buttons?
- Option A:
  Standard buttons can be changed on lookup dialogs, list views, and search result layouts
  Correct
- Option B:
  Standard buttons can be overridden with a Visualforce page
  Correct
- Option C:
  Standard buttons that are not available for overrides can still be hidden on page layouts
  Correct
- Option D:
  Standard buttons can be overridden, relocated on the detail page, and relabeled
  Correct
Show Answer & Explanation Hide Answer & Explanation

Correct Answer: B, C
Question 4
Multiple answers

The Service Manager provided the app builder with color code requirements for case age on open cases. New cases populate a green circle Day-old cases populate a yellow circle Three day-old cases populate a red circle How should an app builder implement this requirement?
- Option A:
  Formula Field
  Correct
- Option B:
  Quick Action
  Correct
- Option C:
  Custom Button
  Correct
- Option D:
  Lightning Web Component
  Correct
Show Answer & Explanation Hide Answer & Explanation

Correct Answer: A
Question 5
Multiple answers

Universal Containers (UC) has a time-sensitive need for a custom component to be built in 4 weeks; UC developers require additional enablement to complete the work and are backlogged by several months. Which option should an app builder suggest to meet this requirement?
- Option A:
  Use an AppExchange solution.
  Correct
- Option B:
  Build a screen flow page.
  Correct
- Option C:
  Build a Lightning record page.
  Correct
- Option D:
  Use a Boit solution.
  Correct
Show Answer & Explanation Hide Answer & Explanation

Correct Answer: A

Free DEX-403E Practice Questions

Question 1

DreamHouse Realty wants to make sure an Opportunity has a field Expected_Close_Date_c populated before it is allowed to enter the qualified stage. How should an app builder solution this request?

Record Type

Validation Rule

Activity History

Page Layout

Question 2

An app builder notices several Accounts converted from Leads are missing information they expected to be caught via Account validation rules. What could be the source of this issue?

The lead settings are unchecked to require validation for converted leads.

Account validation rules fail to validate on records converted from a lead.

The lead settings are allowing users to intentionally bypass validation rules.

Lead validation rules fail to validate on records when they are being converted.

Question 3

An App Builder at UVC would like to prevent users from creating new records on an Account related list by overriding standard buttons. Which two should the App Builder consider before overriding standard buttons?

Standard buttons can be changed on lookup dialogs, list views, and search result layouts

Standard buttons can be overridden with a Visualforce page

Standard buttons that are not available for overrides can still be hidden on page layouts

Standard buttons can be overridden, relocated on the detail page, and relabeled

Question 4

The Service Manager provided the app builder with color code requirements for case age on open cases. New cases populate a green circle Day-old cases populate a yellow circle Three day-old cases populate a red circle How should an app builder implement this requirement?

Formula Field

Quick Action

Custom Button

Lightning Web Component

Question 5

Universal Containers (UC) has a time-sensitive need for a custom component to be built in 4 weeks; UC developers require additional enablement to complete the work and are backlogged by several months. Which option should an app builder suggest to meet this requirement?

Use an AppExchange solution.

Build a screen flow page.

Build a Lightning record page.

Use a Boit solution.