Hiring managers recognize Microsoft certifications on sight, and the Microsoft Dynamics 365 Business Central Developer exam is the gate you have to pass through. The 173 practice questions at ActualCollection keep your preparation aligned with what the exam actually measures.
Microsoft MB-820 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Microsoft Dynamics 365 Business Central Developer |
| Exam Number: | MB-820 |
| Related Certifications: | Microsoft Certified: Dynamics 365 Business Central Functional Consultant Associate |
| Exam Duration: | 120 minutes |
| Available Languages: | German, Portuguese (Brazil), Chinese (Simplified), English, French, Japanese, Spanish, Korean |
| Certificate Validity Period: | 1 year (renewable via Microsoft certification renewal assessment) |
| Exam Price: | $165 USD (varies by region) |
| Passing Score: | 700/1000 |
| Real Exam Qty: | 40-60 |
| Exam Format: | Multiple-response, Case studies, Scenario-based questions, Multiple-choice |
| Recommended Training: | Microsoft Learn - Business Central Developer Training Dynamics 365 Business Central documentation |
| Exam Registration: | Pearson VUE Microsoft Exams Microsoft Certification Exam Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or onsite test center via Pearson VUE |
| Pre Condition: | Basic understanding of Microsoft Dynamics 365 Business Central and AL development language is recommended |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/credentials/certifications/d365-business-central-developer-associate/ |
Microsoft MB-820 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Deploy and maintain solutions | - Deployment processes
|
| Integrate solutions | - Data integration
|
| Debug and optimize solutions | - Performance optimization
|
| Develop by using AL | - Business Central application structure
|
| Extend Dynamics 365 Business Central | - Customization techniques
|
Microsoft MB-820 Certification Exam Q&A
Microsoft Dynamics 365 Business Central Developer is an official Microsoft exam, registered under the code MB-820. A passing score earns you the Microsoft Certified: Dynamics 365 Business Central Developer Associate certification, positioned at the Associate level. The credential also connects to Microsoft Certified: Dynamics 365 Business Central Functional Consultant Associate, so it can anchor a broader certification path. Because Microsoft designs its exams around real job tasks, holding this certification signals practical skill rather than memorized theory.
Candidates face 40-60 questions inside a 120 minutes window on the Microsoft Dynamics 365 Business Central Developer exam. That ratio leaves little slack, which is why pacing deserves as much practice as the content itself. Learn to budget your minutes, park stubborn questions instead of wrestling them, and rehearse under a real clock: a few timed runs in the ActualCollection test engine will make the official time limit feel routine rather than threatening.
The passing bar for Microsoft Dynamics 365 Business Central Developer is set at 700/1000, and registering for the exam officially costs $165 USD (varies by region). There is no reduced price for a second try: fail, and you pay $165 USD (varies by region) in full again. That makes honest self-testing the cheapest insurance available, so hold off on booking until your ActualCollection practice scores sit clearly above the passing line, attempt after attempt.
Basic understanding of Microsoft Dynamics 365 Business Central and AL development language is recommended
Vendor policies are revised from time to time, so double-check the eligibility details before registering on the official exam page.
Sign-up for the Microsoft Dynamics 365 Business Central Developer exam is handled through the official registration channels listed here.
One practical detail: the exam is delivered Online proctored or onsite test center via Pearson VUE, so plan your logistics accordingly.
Microsoft recommends the following training resources for candidates working toward Microsoft Dynamics 365 Business Central Developer.
Training gives you the theory, but repetition locks it in. Pair any course with the 173 practice questions in the ActualCollection MB-820 package and you will know exactly how each topic shows up on exam day.
Absolutely. A free PDF demo of the Microsoft Dynamics 365 Business Central Developer questions is available at ActualCollection, so you can inspect the quality and formatting before any money changes hands. Once you buy, updates are free for 365 days, and when that period runs out you can extend the update service at 50% off the regular price.
ActualCollection offers a 100% money-back guarantee with specific conditions. If you take the Microsoft Dynamics 365 Business Central Developer exam within 60 days of purchase and fail, you may claim a full refund, provided the exam matches your product. Sitting the exam within 3 days of purchase disqualifies a claim, as do downloaded-but-unused products, free materials, and expired orders; the candidate name must also match the payer name. To file, submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and the claim is processed within 7 days. If you prefer, you can skip the refund and instead receive two other exam products of equal value at no charge while keeping the update service on your original purchase.
As for delivery: it is immediate. Your files become downloadable the moment payment completes and are also emailed to you within one minute. If nothing shows up within 2 hours, contact customer service. You may install the software on an unlimited number of computers.
Microsoft Dynamics 365 Business Central Developer is divided into 5 official domains. Among the headline areas are Deploy and maintain solutions, Develop by using AL, and Extend Dynamics 365 Business Central. Scroll up to the exam topics section for the full breakdown, and use it as a checklist: any line you cannot confidently explain deserves another round of practice.
Microsoft Dynamics 365 Business Central Developer Sample Questions:
Case Study 2 - Alpine Ski House
Company Background
Alpine Ski House is a company that owns and operates hotels, restaurants, and stores.
Currently, the company uses the following software and interface:
- Property management software (PMS) to manage hotel rooms
- On-premises accounting software to generate sales invoices and create purchase orders
- An API that allows restaurants and stores to obtain necessary information Restaurants and stores use standalone software for point of sale (POS) devices. Each day, the POS terminals generate a text file of sales data and save the files in a server folder. An account assistant must manually import the files to the current software tables to be processed by the system.
The general manager receives several reports monthly from department managers. The reports take too much time to prepare.
Planned improvements
The company is moving from a different system to Business Central online to manage the whole company.
The company plans to increase efficiency in every department by using APIs to obtain or share information between the different systems.
Each department involved in purchasing must be able to make purchase requests automatically and easily. The departments do not need access to the full ERP management system.
Technical specifications
Alpine Ski House requires the development of several extensions for the planned improvements.
Business Central design patterns must be used to develop all extensions.
Alpine Ski House must develop the following pages:
- Pages that provide multiple configurations in a multistep dialog, like a wizard, to provide required information when the extensions are first installed
- Department-specific Role Center pages to show relevant information and pages with additional information The IT department plans to use Power BI to analyze departmental information. The database must be configured to provide optimal performance.
Department-specific requirements
Housekeeping department
The housekeeping department requires the following to increase efficiency and help avoid data entry errors:
- A Housekeeping Role Center to minimize navigation to relevant areas in Business Central online and to show relevant information in it
- Pages to embed into a new Room page to show additional information about the Room entity
- A table named Room Incident for the housekeeping team to enter room issue information
- A Housekeeping canvas app that connects to an extension
- The department requires the development of an extension with a new API page named RoomsAPI.
- The housekeeping team will use RoomsAPI to publish room details, update when work is complete, or provide repair notifications from the canvas app.
- This custom API page must expose a custom table named Rooms and have an ID 50000. The table must be able to update from the PMS. - The PMS team must know the endpoint to connect to the custom API.
- A developer provides the following details for the API page:
- The extension must be published in Business Central online and include a list page named Room List that includes all hotel rooms.
- Installation or updates to this extension must meet the following requirements:
o Some web services must be published automatically.
o The version of the specified application's metadata must be obtained in AL language, o The code required to perform tasks cannot be accessible from other parts of the application.
o The Room Incident table information must include the following fields:
o Incident entry: An incremental number
o Room No.: A room from the Room table
o Incident Date: The work date
- The table definition in the Room Incident table must autofill the Incident Date when the housekeeping team inserts a new record,
- The value for Incident Date must be the work date configured in the Business Central online client.
- Status: Includes the following options to identify the status of the incident:
o Open: When the Room Incident is created
o In Progress: When someone starts repair work
o Closed: When the incident is solved
- Incident Closing Date: Auto-updating field (when the status passes to Closed, the field will update with the work date)
- Incident Description: Text
- Image: Media data type
o The stored picture must be downloadable from a menu action,
o A Room Incident page must be developed to contain the download action.
Department-specific requirements
Restaurants and stores
To increase efficiency, the new system must manage the generated data from the restaurants and stores directly by using the API on the POS terminals.
The company requires a codeunit called from a job queue to read the information from the POS terminal APIs.
The POS terminal information must be stored in a table named POS Information, have an ID
50100, and be editable on a page.
The account manager requires an option on the menu of the page to run the process manually.
To analyze the information received from the POS terminals, the company requires:
- A custom API named ticketAPI to export the information to Power BI
- Use of the Read Scale-Out feature to improve database performance
Department-specific requirements
Purchasing department and non-conformity handling
The purchasing department requires a new entity in Business Central online to log non- conformities of goods received from vendors. The entity must be set up as follows:
- The non-conformity entity must have two tables:
o a header with common information
o one or more lines with the detailed received items that are non-conforming
- The entity requires a page named Non-conformity and a subpage named Non-conformity Lines to store the information.
- When a purchase order with incorrect quantity or quality issues is received, the entity must create a non-conformity document in the system. The following information must be included in the document:
- Non-conformity Number: must use the No. Series table from Business Central online to manage this field and use these features:
o Alphanumeric values
o Number format that includes "NC" and the year as part of the number; for example, NC24-001
- Non-conformity Date: stores only the creation date
- Vendor No.: stores the number of the vendor that sent the items; only vendors from the company must be included
- Owner: code of an employee defined in the company
- Receipt No.: must meet the following conditions:
o Be an existing receipt No.
o Be received from the vendor indicated in the Vendor No. field
o Comments: can include comments with rich text and pictures to illustrate quality problems o Status: includes non-conformity statuses, such as:
o Open
o Notified
o Closed
- Lines must contain the following details:
o Item No.: item received (for existing inventory items only)
o Description: item description
o Quantity: non-conforming quantity
o Non-conformity Type:
Quality
Quantity
Delivery date
The serial numbers of the non-conformities and the period in which they can be created must be in a configuration table and its corresponding page to allow them to be modified for the users.
Hotspot Question
You need to create the configuration table and page for the non-conformity functionality.
Which table configurations should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Hotspot Question
You create a procedure to check if a purchase order has lines. The procedure returns false for purchase order PO-00001 even though it has purchase lines.
You need to fix the code to get the correct result.
For each of the following statements, select Yes if the statement is true Otherwise, select No.
NOTE: Each correct selection is worth one point.

Case Study 2 - Alpine Ski House
Company Background
Alpine Ski House is a company that owns and operates hotels, restaurants, and stores.
Currently, the company uses the following software and interface:
- Property management software (PMS) to manage hotel rooms
- On-premises accounting software to generate sales invoices and create purchase orders
- An API that allows restaurants and stores to obtain necessary information Restaurants and stores use standalone software for point of sale (POS) devices. Each day, the POS terminals generate a text file of sales data and save the files in a server folder. An account assistant must manually import the files to the current software tables to be processed by the system.
The general manager receives several reports monthly from department managers. The reports take too much time to prepare.
Planned improvements
The company is moving from a different system to Business Central online to manage the whole company.
The company plans to increase efficiency in every department by using APIs to obtain or share information between the different systems.
Each department involved in purchasing must be able to make purchase requests automatically and easily. The departments do not need access to the full ERP management system.
Technical specifications
Alpine Ski House requires the development of several extensions for the planned improvements.
Business Central design patterns must be used to develop all extensions.
Alpine Ski House must develop the following pages:
- Pages that provide multiple configurations in a multistep dialog, like a wizard, to provide required information when the extensions are first installed
- Department-specific Role Center pages to show relevant information and pages with additional information The IT department plans to use Power BI to analyze departmental information. The database must be configured to provide optimal performance.
Department-specific requirements
Housekeeping department
The housekeeping department requires the following to increase efficiency and help avoid data entry errors:
- A Housekeeping Role Center to minimize navigation to relevant areas in Business Central online and to show relevant information in it
- Pages to embed into a new Room page to show additional information about the Room entity
- A table named Room Incident for the housekeeping team to enter room issue information
- A Housekeeping canvas app that connects to an extension
- The department requires the development of an extension with a new API page named RoomsAPI.
- The housekeeping team will use RoomsAPI to publish room details, update when work is complete, or provide repair notifications from the canvas app.
- This custom API page must expose a custom table named Rooms and have an ID 50000. The table must be able to update from the PMS. - The PMS team must know the endpoint to connect to the custom API.
- A developer provides the following details for the API page:
- The extension must be published in Business Central online and include a list page named Room List that includes all hotel rooms.
- Installation or updates to this extension must meet the following requirements:
o Some web services must be published automatically.
o The version of the specified application's metadata must be obtained in AL language, o The code required to perform tasks cannot be accessible from other parts of the application.
o The Room Incident table information must include the following fields:
o Incident entry: An incremental number
o Room No.: A room from the Room table
o Incident Date: The work date
- The table definition in the Room Incident table must autofill the Incident Date when the housekeeping team inserts a new record,
- The value for Incident Date must be the work date configured in the Business Central online client.
- Status: Includes the following options to identify the status of the incident:
o Open: When the Room Incident is created
o In Progress: When someone starts repair work
o Closed: When the incident is solved
- Incident Closing Date: Auto-updating field (when the status passes to Closed, the field will update with the work date)
- Incident Description: Text
- Image: Media data type
o The stored picture must be downloadable from a menu action,
o A Room Incident page must be developed to contain the download action.
Department-specific requirements
Restaurants and stores
To increase efficiency, the new system must manage the generated data from the restaurants and stores directly by using the API on the POS terminals.
The company requires a codeunit called from a job queue to read the information from the POS terminal APIs.
The POS terminal information must be stored in a table named POS Information, have an ID
50100, and be editable on a page.
The account manager requires an option on the menu of the page to run the process manually.
To analyze the information received from the POS terminals, the company requires:
- A custom API named ticketAPI to export the information to Power BI
- Use of the Read Scale-Out feature to improve database performance
Department-specific requirements
Purchasing department and non-conformity handling
The purchasing department requires a new entity in Business Central online to log non- conformities of goods received from vendors. The entity must be set up as follows:
- The non-conformity entity must have two tables:
o a header with common information
o one or more lines with the detailed received items that are non-conforming
- The entity requires a page named Non-conformity and a subpage named Non-conformity Lines to store the information.
- When a purchase order with incorrect quantity or quality issues is received, the entity must create a non-conformity document in the system. The following information must be included in the document:
- Non-conformity Number: must use the No. Series table from Business Central online to manage this field and use these features:
o Alphanumeric values
o Number format that includes "NC" and the year as part of the number; for example, NC24-001
- Non-conformity Date: stores only the creation date
- Vendor No.: stores the number of the vendor that sent the items; only vendors from the company must be included
- Owner: code of an employee defined in the company
- Receipt No.: must meet the following conditions:
o Be an existing receipt No.
o Be received from the vendor indicated in the Vendor No. field
o Comments: can include comments with rich text and pictures to illustrate quality problems o Status: includes non-conformity statuses, such as:
o Open
o Notified
o Closed
- Lines must contain the following details:
o Item No.: item received (for existing inventory items only)
o Description: item description
o Quantity: non-conforming quantity
o Non-conformity Type:
Quality
Quantity
Delivery date
The serial numbers of the non-conformities and the period in which they can be created must be in a configuration table and its corresponding page to allow them to be modified for the users.
Hotspot Question
You need to define the properties of the comments field of the Non-conformity page.
How should you complete the code segment? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Hotspot Question
You are writing a procedure to block all inventory items with numbers that do not start with the letter S.
You need to complete the procedure.
How should you complete the code expressions? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Drag and Drop Question
A company uses four objects in development in Business Central.
The company plans to make changes to the objects.
You need to identify the application layer for each object in Visual Studio Code.
Which objects are available in each application layer? To answer, move the appropriate application layer to the correct objects. You may use each application layer 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.






