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Salesforce DEX-403 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Declarative Development for Platform App Builders in Lightning Experience |
| Exam Number: | DEX-403 |
| Exam Duration: | 105 minutes |
| Exam Format: | Multiple-select, Multiple-choice |
| Related Certifications: | Salesforce Certified Administrator Salesforce Certified Platform Developer I |
| Exam Price: | $200 USD |
| Certificate Validity Period: | 2 years (requires maintenance) |
| Real Exam Qty: | 60 |
| Passing Score: | 65% |
| Available Languages: | German, French, Portuguese (Brazilian), Japanese, English, Spanish |
| Recommended Training: | Trailhead Platform App Builder Trailmix Declarative Development for Platform App Builders (DEX403) Course |
| Exam Registration: | Salesforce Certification Registration Kryterion Webassessor Scheduling |
| Sample Questions: |  |
| Exam Way: | Online proctored or onsite testing center |
| Pre Condition: | No mandatory prerequisites; recommended to have Salesforce Administrator knowledge or experience |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/platform-app-builder |
Salesforce DEX-403 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security and Access | 15% | - Configure organization-wide defaults, roles, and sharing rules - Control access to objects, records, and fields - Set up profiles, permission sets, and field-level security |
| Topic 2: Salesforce Fundamentals | 10% | - Identify use cases for declarative vs programmatic solutions - Understand platform capabilities and Lightning Experience |
| Topic 3: Business Logic and Process Automation | 25% | - Understand save order of execution - Create workflows, Process Builder, and approval processes - Build validation rules, formula fields, and roll-up summaries - Design and implement Flows |
| Topic 4: Data Modeling and Management | 20% | - Implement data validation and quality rules - Manage record types, page layouts, and compact layouts - Design custom objects, fields, and relationships - Import, export, and update data |
| Topic 5: App Deployment and Change Management | 15% | - Manage metadata and deployments - Audit configuration and monitor changes - Use sandboxes and change sets |
| Topic 6: User Interface Customization | 15% | - Create and modify custom tabs and apps - Customize Lightning pages, components, and navigation - Implement Lightning App Builder solutions |
DEX-403 Exam FAQ: Study Smart, Buy Smart
The Salesforce Declarative Development for Platform App Builders in Lightning Experience exam contains 60 to complete within 105 minutes. Timed simulation in the TorrentExam Desktop Test Engine teaches that rhythm before exam day does.
No mandatory prerequisites; recommended to have Salesforce Administrator knowledge or experience Since requirements change over time, confirm the latest on the official Salesforce exam page before scheduling.
TorrentExam issues a full refund if you take the Salesforce Declarative Development for Platform App Builders in Lightning Experience exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
Salesforce recommends these training resources for the Salesforce Declarative Development for Platform App Builders in Lightning Experience exam:
- Declarative Development for Platform App Builders (DEX403) Course
- Trailhead Platform App Builder Trailmix
Follow the training with steady self-testing — the 291 practice questions from TorrentExam help you apply theory and fill any gaps the training leaves.
The Salesforce Declarative Development for Platform App Builders in Lightning Experience exam requires 65% to pass, and registration costs $200 USD. A failed attempt means paying the same fee again — a readiness check with the TorrentExam engines before booking is the cheaper option.
The official Salesforce Declarative Development for Platform App Builders in Lightning Experience outline defines 6 domains. The leading three are App Deployment and Change Management (15%), User Interface Customization (15%), and Data Modeling and Management (20%). The full list is in the topics section above, and TorrentExam's 291 practice questions cover each one.
Online proctored or onsite testing center Register for the Salesforce Declarative Development for Platform App Builders in Lightning Experience exam through these official channels:
After booking, TorrentExam delivers your practice questions within 1 minute — preparation starts the same day.
The DEX-403 exam is a Salesforce certification exam validating the Salesforce Declarative Development for Platform App Builders in Lightning Experience syllabus shown above. It belongs to these credential paths: Salesforce Certified Administrator, Salesforce Certified Platform Developer I. Candidates in 2026 prepare for it with TorrentExam's 291 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows that simulates the real exam with two practice modes and works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. Unsure which suits you? Apply for the free demos and compare — the 291 practice questions are identical across versions, so the only question is preference. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.
Salesforce Declarative Development for Platform App Builders in Lightning Experience Sample Questions:
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?
- A. Standard buttons can be overridden, relocated on the detail page, and relabeled
- B. Standard buttons that are not available for overrides can still be hidden on page layouts
- C. Standard buttons can be overridden with a Visualforce page
- D. Standard buttons can be changed on lookup dialogs, list views, and search result layouts
Correct Answer: B,C 🗳️
Explanation: Only visible for TorrentExam members. You can sign-up / login (it's free).
An app builder is creating a Lightning record page and has added Mobile & Lightning Actions to the page layout.
What two components could be included on the layout to display the actions?
Choose 2 answers
- A. Highlights panel
- B. Path
- C. Activities
- D. Chatter
Correct Answer: A,C 🗳️
Explanation: Only visible for TorrentExam members. You can sign-up / login (it's free).
The VP of Sales at Universal Containers has asked the app builder to let sales reps create opportunity records directly from the account, with a number of fields pre-populated.
Which feature should the app builder use to allow users to create the opportunity?
- A. A custom button
- B. A quick action
- C. A default action
- D. A custom link
Correct Answer: B 🗳️
Explanation: Only visible for TorrentExam members. You can sign-up / login (it's free).
Service agents at Ursa Major Solar want a more condensed case view. Service agents also want to be able to modify the associated contact and account records from the case page layout on the Lightning record page.
Which two components should an app builder use to meet these requirements?
Choose 2 answers
- A. Tabs
- B. Path
- C. Related record
- D. Rich text
Correct Answer: A,C 🗳️
Explanation: Only visible for TorrentExam members. You can sign-up / login (it's free).
An app builder needs to change the data type of some custom fields.
Which two limitations should the app builder be aware of when changing the data type of a custom field?
Choose 2 answers
- A. It is not possible to change the data type of a field used as an External ID from number to text.
- B. It is not possible to change the data type of a formula field to any data type.
- C. It is not possible to change the data type of a Text Area (Long) field to Text.
- D. It is not possible to change the data type of field referenced by Apex code,
Correct Answer: B,C 🗳️
Explanation: Only visible for TorrentExam members. You can sign-up / login (it's free).
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