Exam Name: Declarative Development for Platform App Builders in Lightning- Extended
Certification Provider: Salesforce
Corresponding Certification: Salesforce Platform APP Builder
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Updated: Sep 04, 2026
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Salesforce DEX-403E Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Declarative Development for Platform App Builders in Lightning- Extended |
| Exam Number: | DEX-403E |
| Certificate Validity Period: | 12 months (requires annual maintenance) |
| Available Languages: | German, French, English, Spanish, Japanese |
| Real Exam Qty: | 60 |
| Related Certifications: | Salesforce Certified Platform Developer I Salesforce Certified Administrator |
| Exam Format: | Multiple-choice, Multiple-select |
| Exam Price: | USD 200 |
| Passing Score: | 70% |
| Exam Duration: | 105 minutes |
| Recommended Training: | Declarative Development for Platform App Builders Platform App Builder Trailmix |
| Exam Registration: | Trailhead Academy Registration Kryterion Webassessor Scheduling |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored (remote) or onsite at Kryterion test centers |
| Pre Condition: | Recommended: Salesforce Certified Administrator or equivalent experience |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/platform-app-builder |
Salesforce DEX-403E Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Business Logic and Automation | 25% | - Validation rules and formula fields - Workflow rules and Process Builder - Flow Builder (screen, record-triggered, platform event flows) - Approval processes - Order of execution |
| Application Deployment | 5% | - Deployment best practices - Declarative vs programmatic considerations - Change sets |
| Data Modeling and Management | 20% | - Custom objects and fields - Relationship types (lookup, master-detail, many-to-many) - Data import/export tools - Data validation and quality |
| Salesforce Fundamentals | 10% | - Multi-tenant environment - Sandbox types and usage - Lightning Platform architecture |
| User Interface Customization | 15% | - Record types and page layouts - Lightning App Builder - Quick actions and custom tabs - Lightning record/home/app pages |
| Security and Access Control | 15% | - Profiles and permission sets - Field-level security - Role hierarchy and sharing rules - Organization-wide defaults |
| Reports and Dashboards | 10% | - Report types and formats - Dashboard components and sharing - Filtering and grouping |
Salesforce DEX-403E Exam Questions Answered
The DEX-403E exam leads to the Salesforce Certified Platform App Builder certification from Salesforce. It is positioned at the Intermediate / Professional level. The exam validates the knowledge and skills expected of candidates preparing for Salesforce Declarative Development for Platform App Builders in Lightning- Extended.
Related certifications include:
- Salesforce Certified Administrator
- Salesforce Certified Platform Developer I
The DEX-403E exam includes 60 questions and allows 105 minutes. Before test day, divide the available time by the number of questions in a timed practice set to establish a steady per-question pace. If a difficult item starts consuming too much time, mark it for review and move forward instead of losing momentum. A full timed practice session can help you decide when to move on, when to return, and how much buffer to reserve for a final check.
The passing score for DEX-403E is 70%, and the official exam fee is USD 200. Because a retake requires paying the exam fee again, use timed practice results as a readiness check before scheduling your next attempt. If your performance remains inconsistent, continue reviewing weak domains and repeat a timed session before booking the exam.
Recommended: Salesforce Certified Administrator or equivalent experience
Eligibility rules can change, so confirm the current requirements on the official exam page before registering.
You can register through the official channels listed below:
The available exam delivery method is Online proctored (remote) or onsite at Kryterion test centers.
The official training options include:
After reviewing the recommended training, reinforce what you learned with Actual4dump's 432 practice questions for DEX-403E.
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The current DEX-403E outline is organized into 7 top-level domains. The first listed areas include:
- Application Deployment (5%)
- Business Logic and Automation (25%)
- Data Modeling and Management (20%)
Review the Exam Topics section above for the complete outline and any nested subtopics.
Salesforce Declarative Development for Platform App Builders in Lightning- Extended Sample Questions:
Question 1
SERVICE AGENTS ARE REQUIRED TO CONFIRM A USER IDENTITY BEFORE PROVIDING SUPPORT INFORMATION OVER THE PHONE. WHAT FEATURE CAN AN APP BUILDER USE TO HELP AGENTS MEET THIS REQUIREMENT?
A. Include Surveys as a Case related list
B. Case Validation Rules
C. Add Path to the top of the Case layout
D. Guided Action Flows on the record page
Question 2
Universal Containers wants to create a report to show job applications with or without resumes.
What considerations should the app builder be aware of when creating the custom report type?
A. An app builder is unable to create custom report types for objects they do not have permissions for.
B. Once the report type has been deployed it is unable to be deleted.
C. When a custom or external object is deleted the report type and reports remain but cause an error when the report is run.
D. A primary object selection is locked once the custom report type has been saved.
Question 3
Universal Containers is piloting new features in an existing sandbox and wants to prevent outbound email sends during testing.
What should the app builder do to meet the requirement?
A. Email deliverability set to system email only.
B. Email deliverability set to no access.
C. Email relay to the configured host enabled.
D. Email configured for SMTP authentication.
Question 4
When configuring a record type, an App Builder can configure the available value of a picklist field for the page layout. Which opportunity standard field is available to be configured directly in the Opportunity record type? Choose 2 answers
A. Forecast Category
B. Stage
C. Lead Source
D. Type
Question 5
A manager wants to calculate the number of days since an account was last contacted through email. Which field type should be used to accomplish this?
A. Roll-up Summary
B. Formula
C. Number
D. Date
Solutions:
| Question 1 Answer: D | Question 2 Answer: D | Question 3 Answer: B | Question 4 Answer: C,D | Question 5 Answer: B |
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