2025 Valid MB-820 Real Exam Questions, practice Microsoft Dynamics 365
Latest Success Metrics For Actual MB-820 Exam (Updated 104 Questions)
NEW QUESTION # 29
Hotspot Question
You create an 'AddltemsToJson' procedure and publish it.
The procedure fails to run.
You need to fix the errors in the code.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 30
You need to access the RoomsAPI API from the canvas app.
What should you do?
- A. Use the default API configuration in Business Central
- B. Enable the APIs for the Business Central online environment.
- C. Open the Web Services page and publish the RoomsAPI page as a web service.
- D. Include in the extension a codeunit of type Install that publishes RoomsAPI.
Answer: D
Explanation:
* API Publishing for Extensions:
* In Business Central, when creating custom APIs like RoomsAPI, it is important to ensure that they are automatically published during the installation or upgrade of the extension.
* To achieve this, you can include a codeunit of type Install in the extension that explicitly publishes the custom API (RoomsAPI) as a web service. This ensures that it is available for use immediately after the extension is deployed without requiring manual intervention.
* Codeunit Type:
* A codeunit of type Install runs when the extension is installed or upgraded. This type of codeunit can be used to perform setup tasks such as publishing web services or APIs like RoomsAPI.
* Why Not Other Options?
* Option A (default API configuration): This would not automatically publish the RoomsAPI.
Default APIs do not cover custom APIs.
* Option B (enable APIs for the environment): Enabling APIs in Business Central allows the standard APIs to be used, but custom APIs still need to be manually published.
* Option C (publish via Web Services page): This would work but requires manual intervention to publish RoomsAPI, which does not fulfill the requirement of automatic publishing during installation.
Reference Documentation:
* Publishing APIs in Extensions
* Codeunit Types in Business Central
NEW QUESTION # 31
You need to configure telemetry for the SaaS tenant and test whether the ingested signals are displayed.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
Answer:
Explanation:
Explanation:
The correct sequence of actions to configure telemetry for the SaaS tenant and test whether the ingested signals are displayed would be:
* Create an Azure Application Insights instance by using the Azure Portal in the Customer's subscription.
* Select the environment in the Admin Center and place the connection string in the Application Insights Connection String field.
* Select the Application Insights instance, select Logs and then inspect the Traces table.
To set up telemetry for a SaaS tenant using Azure Application Insights, you need to follow these steps:
* Create an Azure Application Insights instance: This is the first step where you create an instance in Azure that will collect the telemetry data. This should be done in the customer's Azure subscription because it's their data that you're monitoring.
* Configure the SaaS tenant to use the created Application Insights instance: This involves entering the correct connection string in the Business Central Admin Center so that telemetry data from the tenant is sent to the Application Insights instance.
* Verify that telemetry is being collected: After configuring, you would check if the telemetry is arriving as expected by inspecting the Traces table in the Azure Application Insights instance. The 'Traces' table holds the telemetry data, which you can query to verify that the correct signals are being ingested.
NEW QUESTION # 32
A company plans to set up a local Business Central Development Docker container. The environment will be used for testing new project ideas.
You need to ensure that the most recent Business Central artifact URL has been selected. Which command should you use?
- A. Get-BcArtifactUrl -type sandbox -select NextMinor
- B. Get-BcArtifactUrl -type sandbox -select Closest
- C. Get-BcArtifactUrl -type sandbox -select NextMajor
- D. Get-BcArtifactUrl -type sandbox -select Current
Answer: D
Explanation:
To ensure the most recent Business Central artifact URL is selected for setting up a local Business Central Development Docker container, the command to use is Get-BcArtifactUrl -type sandbox -select Current (A). This PowerShell command retrieves the URL for the latest available Business Central artifact for a sandbox environment, ensuring that the Docker container is set up with the most up-to-date version for testing new project ideas. The -select Current parameter is crucial as it specifies that the current, or latest, version of the artifact is to be retrieved, as opposed to selecting a version based on other criteria such as Closest, NextMinor, or NextMajor.
NEW QUESTION # 33
You create a table with fields.
You observe errors in the code
You need to resolve the errors.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
* In line 12, declare "Job Task" as a variable. = NO
* Add the property FieldClass = FlowField; for field 3. = YES
* Add the property FieldClass = FlowFilter; for field 3. = NO
* In line 23, assign the "User Setup" table to a field. = YES
For "In line 12, declare 'Job Task' as a variable": In the AL code provided, the "Job Task" appears to be part of a CalcFormula of a FlowField, which means it references a table and not a variable. The "Job Task" does not need to be declared as a variable because it is used to reference a table in a CalcFormula expression.
For "Add the property FieldClass = FlowField; for field 3": The line of code CalcFormula = sum("Job Task
"."Recognized Sales Amount" where("Job No." = field("No."))); indicates that this field is calculated from other table data, which is the definition of a FlowField. Therefore, adding the property FieldClass = FlowField; is necessary for the field to function correctly.
For "Add the property FieldClass = FlowFilter; for field 3": FlowFilters are used to filter data based on the value in a flow field. Since field 3 is using a CalcFormula to sum values, it is a FlowField and not a FlowFilter. Therefore, this statement is not correct.
For "In line 23, assign the 'User Setup' table to a field": The line TableRelation = "User Setup"; suggests that the "Project Manager" field has a relation to the "User Setup" table, which is a method of assigning a table to a field to ensure that the values in "Project Manager" correspond to values in the "User Setup" table.
Hence, this statement is true.
NEW QUESTION # 34
You are developing a codeunit for a company that uses Business Central.
The code unit must be run only during installation of an extension package.
You need to create the codeunit.
How should you complete the code' To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
Subtype: Install
Trigger: OnInstallAppPerCompany
You are developing a codeunit that should only run during the installation of an extension package.
Options:
* Subtype: The correct subtype is Install, as it indicates that the codeunit runs only when the extension is being installed.
* Trigger: The correct trigger for running during installation is OnInstallAppPerCompany, which handles code execution when the app is installed for a specific company.
NEW QUESTION # 35
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
Answer:
Explanation:
Explanation:
Design pattern for the setup table:
* The correct selection here is Adapter. The Adapter design pattern is commonly used when you need to handle integration points or create a setup table that acts as an intermediary for data manipulation, which fits the requirement for the configuration of the non-conformity functionality.
Data type of the primary key field:
* The correct data type is Code. In Business Central, when creating a table with a primary key field, the Code data type is typically used for fields such as document numbers, codes, and identifiers. For a setup table, a Code field is appropriate for keys like "No." series or setup identifiers.
Property required to prevent users from adding records:
* The correct property is InitValue. This property is used to set initial values for fields and can be configured in such a way that users are prevented from adding records directly, typically enforcing control over record creation and editing in configuration scenarios.
NEW QUESTION # 36
Case Study 1 - Contoso, Ltd
Background
Contoso, Ltd. is a sales company in the manufacturing industry. It has subsidiaries in multiple countries/regions, each with its own localization. The subsidiaries must be data-independent from each other. Contoso. Ltd. uses an external business partner to manage the subcontracting of some manufacturing items. Contoso, Ltd. has different sectors with data security between sectors required.
Current environment
Contoso, Ltd. uses Business Central online as the main ERP for financials, sales, purchase, warehouse, and manufacturing processes. It has employees that use the Business Central web application and external applications. The company has a custom external mobile app under development.
The IT department and its partners installed custom extensions to satisfy the company's requirements where the functionality is not available natively.
Contoso, Ltd. interacts with external services provided by customers and partners. Different applications interact with SOAP and OData endpoints exposed from Business Central.
An external business partner of Contoso, Ltd. exposed a REST API for receiving details about new subcontracting orders and for sending the planned release date of each subcontracting order received.
Contoso, Ltd. has not activated the monitoring of the tenant and has no internal telemetry for its apps.
Custom reporting must be created to meet the requirements of the different departments.
Tenant management
Contoso, Ltd. has the following tenant management considerations:
IT department
The IT department requires the ability to monitor the tenant to prevent performance problems and detect possible anomalies.
The IT department plans to use Azure Application Insights and Log Analytics to inspect the ingested telemetry signals.
All tenant upgrades are automatically handled by Microsoft. The IT department does not check for update availability or for tenant-related notifications.
The IT department has not configured the receipt of tenant-related notifications from the Business Central admin center.
External business partner
The external business partner must add custom telemetry to an application created for Contoso, Ltd. to monitor a business process.
Custom telemetry signals for the application must be visible only on the partner's telemetry.
SOAP
Contoso, Ltd. plans to dismiss using the SOAP protocol for integrations.
Contoso, Ltd. must be able to detect if external applications are using its Business Central SOAP endpoints.
Issue
The Business Central tenant is upgraded by Microsoft to a new major version during the night.
Users report that one of the Contoso, Ltd. extensions disappeared from the tenant. The IT department confirms that the extension is still published.
Custom mobile application requirements
Contoso, Ltd. plans to create a custom mobile application that has the following requirements:
The app must be used by employees to check item details from the ERP in real time and to report issues that occur during the manufacturing process.
An AL extension must be created for handling archived issues.
Business Central development guidelines must be followed when implementing modules.
A module must be implemented for the reporting and tracking of issues information. You plan to call this module Issue Management. The module must expose a method named PostIssue.
Code modifications will be required over time.
The Issue Management process must be split into two extensions:
ISSUE BASE: main extension
ISSUE EXT: second extension with dependency from ISSUE BASE
In the version 1.0.0.0 of the ISSUE BASE extension, you plan to create an Issue table that contains a global Decimal variable named IssueTotal.
In the version 1.0.0.0 of the ISSUE BASE extension, you plan to define a table named Issue Category with a Description field defined as follows:
The Issue table defined in ISSUE BASE extension contains a Clone procedure defined as follows:
In the ISSUE EXT extension, you create a tableextension object of the Issue table.
The tableextension object of the Issue table must access the IssueTotal: Decimal variable.
After weeks of usage, you discover that you must remove the Description field and the Clone procedure because they are no longer required.
In a new version of the ISSUE BASE extension, you create a new Issue Type table. You must move data row by row from a previously obsolete Issue Category table to the new Issue Type table. Because a large amount of data must be moved, you must write an Upgrade codeunit by using the DataTransfer object.
The IT department creates a custom API for exposing the custom Issue table. The API provides an action for copying an issue to a new table. The action is defined as follows:
Contoso, Ltd. must create an API in Business Central to expose item details to the mobile application.
The API must have the lowest possible impact on the production environment when used during working hours.
The API must only support Get operations.
Debugging problems
A user of the ISSUE BASE extension in Business Central reports a problem.
To debug the problem, snapshot debugging with the following configuration was activated:
You discover that the debugging is not triggering.
Integration with business partner for subcontracting
Contoso, Ltd. must connect Business Central to the external API provided by the business partner. This will be used for the partner to send the details of new subcontracting orders to fulfill the sales demand, and for receiving the planned release date of each order sent. The integration requirements are as follows:
The business partner will provide a REST API secured with basic authentication. Credentials to access the API will be shared with Contoso, Ltd.
The API for sending subcontracting orders must be called by sending an authenticated POST request to the given endpoint.
The API for retrieving the order no. and planned release date of each subcontracting order responds with the following JSON:
Each order no. must be retrieved.
You need to call the Issue API action from the mobile application.
Which action should you use?
- A. PATCH /issues(88122e0e-5796-ec11-bb87-000d3a392eb5)/Microsoft.NAV.Copy
- B. POST /issues(88122e0e-5796-ec11-bb87-000d3a392eb5)/copy
- C. POST /issues(88122e0e-5796-ec11-bb87-000d3a392eb5)/Copy
- D. POST /issues(88122e0e-5796-ec11-bb87-000d3a392eb5)/Microsoft.NAV.Copy
- E. POST /issues(88122e0e-5796-ec11-bb87-000d3a392eb5)/Microsoft.NAV.copy
Answer: C
Explanation:
In the context provided by the case study, when calling an API action from a mobile application, the correct format for a POST request to an action in Business Central typically involves specifying the entity (/issues), the ID of the entity (88122e0e-5796-ec11-bb87-000d3a392eb5), and the action to be called (/Copy). The action name should match the exact name as defined in the AL code, which is case-sensitive.
NEW QUESTION # 37
You need to download a stored picture from the Room Incident 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.
F
Answer:
Explanation:
Explanation:
var
TempBlob: Codeunit "Temp Blob";
IncidentOutStream: OutStream;
IncidentInStream: InStream;
ImageFilter, FileName: Text;
begin
// Initialize the TempBlob and streams
TempBlob.CreateOutStream(IncidentOutStream);
Rec.Image.ExportStream(IncidentOutStream); // 'Rec' refers to the current Room Incident record TempBlob.CreateInStream(IncidentInStream);
// Set the filters and filename for the image
ImageFilter := 'Image Files (*.bmp,*.jpg,*.jpeg,*.gif)|*.bmp;*.jpg;*.jpeg;*.gif'; FileName := 'Customer Picture';
// Prompt the user to download the image
if not DownloadFromStream(IncidentInStream, '', 'Download Incident Picture', '', ImageFilter, FileName) then Error('Unable to download the image.'); end;
NEW QUESTION # 38
A company uses a Vendor-List report from the Base Application.
The company has new requirements that cannot be met by extending the Vendor - List report.
You create a new report named My Customized Vendor - List.
You need to replace the Vendor - List report with My Customized Vendor - List.
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.
Answer:
Explanation:
Explanation:
he code in the image shows an event subscription to substitute reports in Business Central.
Code Explanation:
* EventSubscriber subscribes to an event in Business Central that allows you to replace or substitute the report at runtime.
* The event here is associated with Report Distribution Management.
* The local procedure OnSubstituteReport checks if the report being requested is Vendor - List. If it is, it replaces it with My Customized Vendor - List.
Completion:
* EventSubscriber ObjectType: The correct object type in this case is Report Distribution Management.
* Event Name: The appropriate event to substitute a report is OnAfterSubstituteReport.
NEW QUESTION # 39
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?
- A. BlankZero
- B. CalcFormula
- C. AutoFormatType
- D. DecimalPlaces
Answer: D
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.
NEW QUESTION # 40
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.
Answer:
Explanation:
NEW QUESTION # 41
Hotspot Question
You have a per tenant extension that contains the following code.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 42
A company has the following custom permission set:
You need to make the permission set visible on the Permission Sets page.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.
Answer:
Explanation:
Explanation:
To make the permission set visible on the Permission Sets page, perform the following actions in sequence:
* Change the Assignable property value to true.
* Add the ObsoleteState = No property.
* Publish the app with the permission set to an environment.
Process for making permission sets visible:In Business Central, the Assignable property determines whether a permission set is shown in the user interface for assigning to users. By default, if Assignable is set to false, the permission set is hidden. Therefore, it should be set to true to make the permission set visible.
The ObsoleteState property indicates whether an object is outdated (Obsolete) or not (No). If an object is marked as obsolete, it is typically hidden from the user interface. Therefore, setting ObsoleteState = No ensures that the permission set is not treated as outdated and remains visible.
Finally, publishing the app with the permission set to an environment updates the environment with the new or modified objects, including permission sets, making them available for assignment to users.
NEW QUESTION # 43
What best practice should be followed when maintaining extensions for long-term usability?
- A. Focus solely on adding new features
- B. Limit updates to once every few years to minimize disruption
- C. Use hard-coded values to ensure consistency
- D. Regularly refactor code to align with the latest AL language capabilities
Answer: D
NEW QUESTION # 44
You need to allow debugging in an extension to view the source code.
In which file should you specify the value of the allowDebugging property?
- A. rad.json
- B. launch.json
- C. app.json
- D. settings.json
Answer: C
Explanation:
To enable debugging in an extension and allow the source code to be viewed, the allowDebugging property should be specified in the app.json file (C). The app.json file serves as the manifest for an AL project in Microsoft Dynamics 365 Business Central, defining the project's properties, dependencies, and features. By setting the allowDebugging property to true in this file, developers enable the debugging of the extension's source code, facilitating troubleshooting and development. This is essential for analyzing the behavior of the extension and identifying issues during the development process.
NEW QUESTION # 45
Hotspot Question
You create a table with fields.
You observe errors in the code.
You need to resolve the errors.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 46
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?
- 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.
NEW QUESTION # 47
You need to parse the API JSON response and retrieve each order no. in the response body.
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.
Answer:
Explanation:
Explanation:
Code Segment Analysis:
* The AL code is trying to read JSON data from a response and process it to extract subcontracting order numbers. It uses JsonToken, JsonObject, and JsonArray to work with the JSON data.
* JToken.ReadFrom(Data): This line reads the incoming JSON data and converts it into a token. It processes the full JSON body so you can start working with it.
* JToken.SelectToken("results"): This line selects the part of the JSON containing the results array.
The key "results" is where the JSON response data is expected to be found.
* JsonArray: Once the results are extracted, they are stored as an array, and each element in the array (which is expected to contain subcontracting order numbers) is processed.
* SubcontractingOrderNo: The extracted order_no from the JSON is stored in this variable.
Breakdown of Steps:
* JToken.ReadFrom(Data): This step reads the entire JSON response.
* JToken.SelectToken("results"): This step selects the results array from the JSON response.
* JArray.AsArray(): This step converts the selected results token into a JSON array that can be iterated over.
* GetValueAsText(JToken, 'order_no'): This step retrieves the order_no from each element in the array.
Correct Code Completion:
* JToken.ReadFrom(Data): This is the correct method to read the incoming JSON response, as it will convert the string into a JsonToken that can be further processed.
* JToken.SelectToken("results"): This is the correct method to extract the results array from the token.
This method looks for the key "results" in the JSON and retrieves the relevant array.
Final Code Segment:
al
Copy code
procedure ReadJsonData(Data: text)
var
JToken: JsonToken;
JObject: JsonObject;
JArray: JsonArray;
SubcontractingOrderNo: Code[20];
begin
if Data = '' then
exit;
JToken := JToken.ReadFrom(Data); // Step 1: Read the JSON response data.
JToken := JToken.SelectToken('results'); // Step 2: Select the "results" array.
JArray := JToken.AsArray(); // Convert the token into a JSON array.
foreach JToken in JArray do begin
SubcontractingOrderNo := GetValueAsText(JToken, 'order_no'); // Retrieve the order number.
end;
end;
* JToken.ReadFrom(Data): This reads the raw JSON data string and converts it into a JSON token that can be processed.
* JToken.SelectToken("results"): This extracts the results array from the JSON data.
* JArray.AsArray(): Converts the token into an array so we can iterate over it.
* GetValueAsText(JToken, 'order_no'): Extracts the order_no value from each item in the array.
NEW QUESTION # 48
A company is setting up a sandbox environment.
You observe the following issues in Visual Studio Code:
* When you open the User Settings window, no AL command is available
* In the Problems tab. the error 'The target page Customer List for the extension object is not found' is displayed.
You need to identify a solution for each issue.
Which solutions should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
No AL command in User Settings:The correct solution is to Install the AL Language extension.
* This issue arises when the AL Language extension is not installed in Visual Studio Code, which is required to work with AL projects in Business Central.
Error in the Problems tab:The correct solution is to Download Symbols.
* This error typically occurs when the symbols (metadata for pages, tables, etc.) are not downloaded, and Visual Studio Code cannot resolve the reference to the Customer List page. Downloading symbols should fix the problem.
NEW QUESTION # 49
A company is setting up a sandbox environment.
You observe the following issues in Visual Studio Code:
* When you open the User Settings window, no AL command is available
* In the Problems tab. the error 'The target page Customer List for the extension object is not found' is displayed.
You need to identify a solution for each issue.
Which solutions should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
No AL command in User Settings:The correct solution is to Install the AL Language extension.
* This issue arises when the AL Language extension is not installed in Visual Studio Code, which is required to work with AL projects in Business Central.
Error in the Problems tab:The correct solution is to Download Symbols.
* This error typically occurs when the symbols (metadata for pages, tables, etc.) are not downloaded, and Visual Studio Code cannot resolve the reference to the Customer List page. Downloading symbols should fix the problem.
NEW QUESTION # 50
You need to create the API page according to the requirements.
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.
Answer:
Explanation:
Explanation:
NEW QUESTION # 51
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