Describe Business Central
10–15%- Describe architecture, extensions, the customisation update lifecycle, and online versus on-premises.
- Differentiate the base app and system app and describe bringing an app to AppSource.
Microsoft Dynamics 365 Business Central Developer Associate (MB-820)
The MB-820 exam is designed for professionals who implement and configure Business Central. It validates your ability to describe Business Central, install, develop, and deploy for Business Central, develop by using AL objects, develop by using AL, work with development tools, and integrate Business Central with other applications.
Exam details
- Certification
- Dynamics 365 Business Central Developer Associate
- Application
- Business Central
- Exam code
- MB-820
- Level
- Associate
- Duration
- Approximately 100 minutes
- Questions
- Typically 40–60 questions
- Passing score
- 700 out of 1000
- Cost
- USD $165 — typical price; the exact fee varies by country/region and currency, and local taxes may apply.
- Prerequisites
- None required
- Languages
- English (also available in Japanese, Spanish, French, German and several other languages)
- Delivered by
- Pearson VUE
- Renewal
- Free online assessment, every 12 months
Skills measured
Install, develop, and deploy for Business Central
10–15%- Install and configure the AL development environment and workspaces.
- Create, debug, deploy, and maintain extensions in Visual Studio Code, including multilanguage.
Develop by using AL objects
35–40%- Build and extend tables, pages, enums, and Role Centers.
- Build reports, XMLports, codeunits, events, and interfaces.
- Create permission sets, entitlements, and queries.
Develop by using AL
15–20%- Customise profiles, views, assisted setup, teaching tips, and onboarding.
- Apply data process, document, and master data design patterns.
- Use AL types, procedures, error handling, and access modifiers.
Work with development tools
10–15%- Implement tests with the Test Toolkit, test codeunits, and procedures.
- Configure, monitor, and emit custom telemetry signals.
Integrate Business Central with other applications
10–15%- Call REST services with HTTP classes and JSON.
- Implement APIs, OData bound and unbound actions, and Read Scale-Out.
Study Resources
Frequently asked questions
Who should take MB-820?
MB-820 is for Business Central developers, AL developers, and ERP technical consultants. Most work at Microsoft ISVs, in partner development teams, or at mid-market manufacturers and distributors.
What is the average salary for a Business Central Developer?
Conspicuous's 2026 U.S. Business Central salary guide places mid-level AL developers with two to five years' experience at $104,500–$137,500 and senior developers at $137,500–$176,000. In the U.K., Pearson Carter's current listings advertise £60,000–£70,000 for a senior hybrid role; a principal remote role offers up to £95,000. These are experience- and role-specific benchmarks, not a single market-wide average.
How should I prepare for MB-820?
Access the free MB-820T00 Course on Microsoft Learn. Then use our MB-820 Exam Practice Test to practise the exam skills.
Avoid exam dumps: using them can invalidate your score, revoke certifications you already hold, and bar you from future exams.
You can also search the Microsoft Training Services Partners directory for instructor-led options. Current U.S. listings show $2,995 for New Horizons's five-day course and $2,995 for QuickStart's MB-820T00 course. Prices vary by provider and format.
Does the exam include official labs I can use to practice?
If you purchase instructor-led training, Microsoft Training Services Partners usually provide access to official labs for about 90 days. Always check that the labs are from a Microsoft partner such as Skillable.
Depending on the exam, a trial licence could include demo data to practise with, but this is not guaranteed and Microsoft often changes its policies about free trials with demo data. If you prefer hands-on learning using labs, contact a Microsoft Training Services Partner for instructor-led training.