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Microsoft MB-820 - Microsoft Dynamics 365 Business Central Developer

Last Update Feb 22, 2026

Microsoft Certification Exams Pack

Everything from Basic, plus:
  • Exam Name: Microsoft Dynamics 365 Business Central Developer
  • 122 Questions Answers with Explanation Detail
  • Total Questions: 122 Q&A's
  • Single Choice Questions: 45 Q&A's
  • Multiple Choice Questions: 12 Q&A's
  • Hotspot Questions: 47 Q&A's
  • Drag Drop Questions: 18 Q&A's


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Total Questions: 122
Free Practice Questions: 36

A company plans to meet new regulatory requirements.

The regulator has issued new tax tiers.

You need to update the base application table by using a table extension.

Which table field property can you change?

Options:

A.

CalcFormula

B.

DecimalPlaces

C.

BlankZero

D.

AutoFormatType

Answer
C
Explanation

When updating the base application table using a table extension in Microsoft Dynamics 365 Business Central, certain properties of table fields can be modified to meet new requirements, such as regulatory changes. The DecimalPlaces property (B) is one such property that can be adjusted in a table extension. This property determines the number of decimal places that are displayed and stored for decimal fields in the table. Adjusting the DecimalPlaces property can be particularly useful when dealing with financial data and tax calculations that require precision to meet new tax tiers set by a regulator. It's important to note that not all properties can be modified in a table extension; for example, the CalcFormula property (A) cannot be changed as it affects how the field's value is calculated, which could have significant implications on the base application's logic.

You must simulate the user interaction of selecting a posting option. The options must include:

• Ship

• Invoice

• Ship & Invoice

You need to create a test codeunit to run the test.

What should you use?

Options:

A.

Normal attribute

B.

Handler method

C.

Test attribute

Answer
B
Explanation

    Handler methods are used in tests to simulate user interactions, such as responding to dialogs, confirmation messages, or option selections. Since you need to simulate the user interaction of selecting a posting option (Ship, Invoice, Ship & Invoice), a Handler method would be the appropriate choice for capturing this kind of user input.

    Normal attribute and Test attribute are used for marking methods for test execution, but they do not simulate user interaction, making Handler method the correct answer.

For more details, see the Microsoft Docs on Test Codeunits and Handler Methods.

A company is examining Connect apps and Add-on apps for use with Business Central.

You need to describe the development language requirements for Connect apps and Add-on apps.

How should you describe the app language requirements? To answer, move the appropriate app types to the correct descriptions. You may use each app type once, more than once, or not at all. You may need to move the split bar between panes or scroll to view content.

NOTE: Each correct selection is worth one point.

Question # 3

Options:

Answer
Answer: Answer # 3
Explanation

3

    Developed by using any coding language: Connect app

    Developed by using AL language in Visual Studio Code: Add-on app

In Microsoft Dynamics 365 Business Central, there are distinct types of applications that can be developed: Connect apps and Add-on apps. Each has its own development language requirements:

    Connect apps:

      Connect apps are designed to connect Business Central with external services or applications. They are often developed using a variety of programming languages, not limited to the AL language, and can be hosted outside of the Business Central environment. Therefore, when a description states that the app is developed using any coding language, it generally refers to a Connect app. This type of app integrates with Business Central through APIs and web services.

    Add-on apps:

      Add-on apps are built to extend the functionality of Business Central within the application itself. These are developed using the AL language, which is the programming language for Business Central, and they are created and managed within the Visual Studio Code environment with the AL Language extension. An Add-on app is typically a Business Central extension that is directly installed into the Business Central environment.

The language and environment used for developing these apps are key differentiators between Connect apps and Add-on apps.

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Microsoft MB-820 FAQ'S

Find answers to the most common questions about the Microsoft MB-820 exam, including what it is, how to prepare, and how it can boost your career.

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