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Microsoft MB-820 Premium Bundle

MB-820 Premium File: 131 Questions & Answers

Last Update: Oct 12, 2026

MB-820 PDF Study Guide: 948 Pages

$74.99

MB-820 Bundle gives you unlimited access to "MB-820" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

Microsoft MB-820 Practice Test 47

Question 460

A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. A targeted trial still reproduces the original gap after the team attempted this change: Use a PageType API query for a read-only joined or aggregated endpoint. Which repair directly addresses the remaining defect?

  1. Change the query type and discoverability properties to the intended in-client usage
  2. Replace the incorrect API page model with a query type API object and publish its versioned endpoint
  3. Refactor the record traversal to a query with correct aggregation and benchmark the filtered result
  4. Route writes to the appropriate API page and remove mutating assumptions from the query endpoint

Explanation

Correct Answer

B:

Replace the incorrect API page model with a query type API object and publish its versioned endpoint. This directly addresses the remaining defect for the requirement—A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. It restores the mechanism described here: Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

Incorrect Answers

A:

This correction is for the separate condition: A finance team wants reusable interactive report-like query results in the Business Central UI. It would not directly restore the intended behavior in this situation: A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. Here, replace the incorrect api page model with a query type api object and publish its versioned endpoint, because Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

C:

This correction is for the separate condition: An inventory extension performs repetitive database calls to create a simple grouped stock summary. It would not directly restore the intended behavior in this situation: A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. Here, replace the incorrect api page model with a query type api object and publish its versioned endpoint, because Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

D:

This correction is for the separate condition: A partner exposes an aggregated API query and expects PATCH and POST operations to update source records. It would not directly restore the intended behavior in this situation: A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. Here, replace the incorrect api page model with a query type api object and publish its versioned endpoint, because Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

Question 461

A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Use a normal query object suitable for viewing its dataset in the application
  2. Evaluate replacing the record loop with a database-backed query and aggregation
  3. Separate read-only API query responsibilities from write-capable API page endpoints
  4. Use a PageType API query for a read-only joined or aggregated endpoint

Explanation

Correct Answer

D:

This targets the concrete requirement—A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Business Central API queries expose read-only OData data and can join sources, unlike API pages intended for entity CRUD. The team can establish success when the endpoint returns the joined or aggregated data and rejects write operations.

Incorrect Answers

A:

This choice primarily fits a different requirement: A controller needs analysts to open an aggregated dataset interactively from within Business Central. There, a normal query can present its dataset in the client, while api queries are designed for web service consumption. In the current situation, A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Business Central API queries expose read-only OData data and can join sources, unlike API pages intended for entity CRUD. Acceptance requires the endpoint returns the joined or aggregated data and rejects write operations.

B:

This choice primarily fits a different requirement: A slow AL routine loops through a large invoice table to construct totals one record at a time. There, queries can move joins and grouping nearer the data source and reduce redundant al record iterations. In the current situation, A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Business Central API queries expose read-only OData data and can join sources, unlike API pages intended for entity CRUD. Acceptance requires the endpoint returns the joined or aggregated data and rejects write operations.

C:

This choice primarily fits a different requirement: An API query joins several dimensions but the client tries to use it to submit a purchase document. There, api query objects do not provide entity crud; writable entities require an appropriate api page and business rules. In the current situation, A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Business Central API queries expose read-only OData data and can join sources, unlike API pages intended for entity CRUD. Acceptance requires the endpoint returns the joined or aggregated data and rejects write operations.

Question 462

A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. The developer recommends the following change: Use a PageType API query for a read-only joined or aggregated endpoint. Which technical explanation most directly justifies it in this case?

  1. Business Central API queries expose read-only OData data and can join sources, unlike API pages intended for entity CRUD
  2. A normal query can present its dataset in the client, while API queries are designed for web service consumption
  3. Queries can move joins and grouping nearer the data source and reduce redundant AL record iterations
  4. API query objects do not provide entity CRUD; writable entities require an appropriate API page and business rules

Explanation

Correct Answer

A:

Business Central API queries expose read-only OData data and can join sources, unlike API pages intended for entity CRUD. It connects the proposed action to the exact failure or requirement—A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Confirmation would be the endpoint returns the joined or aggregated data and rejects write operations.

Incorrect Answers

B:

That mechanism explains why the alternative action—use a normal query object suitable for viewing its dataset in the application—helps in another case. It does not justify the proposed fix here; Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud. The distinguishing requirement is: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records.

C:

That mechanism explains why the alternative action—evaluate replacing the record loop with a database-backed query and aggregation—helps in another case. It does not justify the proposed fix here; Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud. The distinguishing requirement is: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records.

D:

That mechanism explains why the alternative action—separate read-only api query responsibilities from write-capable api page endpoints—helps in another case. It does not justify the proposed fix here; Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud. The distinguishing requirement is: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records.

Question 463

A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. The team implemented a change aligned with this plan: Use a PageType API query for a read-only joined or aggregated endpoint. Which acceptance result specifically verifies that the reported problem is resolved?

  1. Authorized users can open the query data view and inspect the expected columns and sums
  2. The endpoint returns the joined or aggregated data and rejects write operations
  3. A benchmark on representative data shows correct totals and fewer repetitive database calls
  4. GET succeeds on the query and writes are routed through a separately authorized API page

Explanation

Correct Answer

B:

The endpoint returns the joined or aggregated data and rejects write operations. This is stronger than an unrelated health check because the desired design action is use a pagetype api query for a read-only joined or aggregated endpoint, and Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud. The local requirement is: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records.

Incorrect Answers

A:

This would verify use a normal query object suitable for viewing its dataset in the application, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. The decisive local proof is the endpoint returns the joined or aggregated data and rejects write operations.

C:

This would verify evaluate replacing the record loop with a database-backed query and aggregation, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. The decisive local proof is the endpoint returns the joined or aggregated data and rejects write operations.

D:

This would verify separate read-only api query responsibilities from write-capable api page endpoints, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. The decisive local proof is the endpoint returns the joined or aggregated data and rejects write operations.

Question 464

A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. A targeted trial still reproduces the original gap after the team attempted this change: Use a PageType API query for a read-only joined or aggregated endpoint. Which repair directly addresses the remaining defect?

  1. Change the query type and discoverability properties to the intended in-client usage
  2. Refactor the record traversal to a query with correct aggregation and benchmark the filtered result
  3. Replace the incorrect API page model with a query type API object and publish its versioned endpoint
  4. Route writes to the appropriate API page and remove mutating assumptions from the query endpoint

Explanation

Correct Answer

C:

Replace the incorrect API page model with a query type API object and publish its versioned endpoint. This directly addresses the remaining defect for the requirement—A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. It restores the mechanism described here: Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

Incorrect Answers

A:

This correction is for the separate condition: A finance team wants reusable interactive report-like query results in the Business Central UI. It would not directly restore the intended behavior in this situation: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Here, replace the incorrect api page model with a query type api object and publish its versioned endpoint, because Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

B:

This correction is for the separate condition: An inventory extension performs repetitive database calls to create a simple grouped stock summary. It would not directly restore the intended behavior in this situation: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Here, replace the incorrect api page model with a query type api object and publish its versioned endpoint, because Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

D:

This correction is for the separate condition: A partner exposes an aggregated API query and expects PATCH and POST operations to update source records. It would not directly restore the intended behavior in this situation: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. Here, replace the incorrect api page model with a query type api object and publish its versioned endpoint, because Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud.

Question 465

A controller needs analysts to open an aggregated dataset interactively from within Business Central. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Use a normal query object suitable for viewing its dataset in the application
  2. Evaluate replacing the record loop with a database-backed query and aggregation
  3. Separate read-only API query responsibilities from write-capable API page endpoints
  4. Create a query object with linked dataitems and explicit join relationships

Explanation

Correct Answer

A:

This targets the concrete requirement—A controller needs analysts to open an aggregated dataset interactively from within Business Central. A normal query can present its dataset in the client, while API queries are designed for web service consumption. The team can establish success when authorized users can open the query data view and inspect the expected columns and sums.

Incorrect Answers

B:

This choice primarily fits a different requirement: A slow AL routine loops through a large invoice table to construct totals one record at a time. There, queries can move joins and grouping nearer the data source and reduce redundant al record iterations. In the current situation, A controller needs analysts to open an aggregated dataset interactively from within Business Central. A normal query can present its dataset in the client, while API queries are designed for web service consumption. Acceptance requires authorized users can open the query data view and inspect the expected columns and sums.

C:

This choice primarily fits a different requirement: An API query joins several dimensions but the client tries to use it to submit a purchase document. There, api query objects do not provide entity crud; writable entities require an appropriate api page and business rules. In the current situation, A controller needs analysts to open an aggregated dataset interactively from within Business Central. A normal query can present its dataset in the client, while API queries are designed for web service consumption. Acceptance requires authorized users can open the query data view and inspect the expected columns and sums.

D:

This choice primarily fits a different requirement: A reporting team needs a joined view of customers and their invoices without iterating each customer in AL code. There, query dataitems define the tables and links for one combined rowset of related records. In the current situation, A controller needs analysts to open an aggregated dataset interactively from within Business Central. A normal query can present its dataset in the client, while API queries are designed for web service consumption. Acceptance requires authorized users can open the query data view and inspect the expected columns and sums.

Question 466

A controller needs analysts to open an aggregated dataset interactively from within Business Central. The developer recommends the following change: Use a normal query object suitable for viewing its dataset in the application. Which technical explanation most directly justifies it in this case?

  1. Queries can move joins and grouping nearer the data source and reduce redundant AL record iterations
  2. A normal query can present its dataset in the client, while API queries are designed for web service consumption
  3. API query objects do not provide entity CRUD; writable entities require an appropriate API page and business rules
  4. Query dataitems define the tables and links for one combined rowset of related records

Explanation

Correct Answer

B:

A normal query can present its dataset in the client, while API queries are designed for web service consumption. It connects the proposed action to the exact failure or requirement—A controller needs analysts to open an aggregated dataset interactively from within Business Central. Confirmation would be authorized users can open the query data view and inspect the expected columns and sums.

Incorrect Answers

A:

That mechanism explains why the alternative action—evaluate replacing the record loop with a database-backed query and aggregation—helps in another case. It does not justify the proposed fix here; a normal query can present its dataset in the client, while api queries are designed for web service consumption. The distinguishing requirement is: A controller needs analysts to open an aggregated dataset interactively from within Business Central.

C:

That mechanism explains why the alternative action—separate read-only api query responsibilities from write-capable api page endpoints—helps in another case. It does not justify the proposed fix here; a normal query can present its dataset in the client, while api queries are designed for web service consumption. The distinguishing requirement is: A controller needs analysts to open an aggregated dataset interactively from within Business Central.

D:

That mechanism explains why the alternative action—create a query object with linked dataitems and explicit join relationships—helps in another case. It does not justify the proposed fix here; a normal query can present its dataset in the client, while api queries are designed for web service consumption. The distinguishing requirement is: A controller needs analysts to open an aggregated dataset interactively from within Business Central.

Question 467

A controller needs analysts to open an aggregated dataset interactively from within Business Central. The team implemented a change aligned with this plan: Use a normal query object suitable for viewing its dataset in the application. Which acceptance result specifically verifies that the reported problem is resolved?

  1. A benchmark on representative data shows correct totals and fewer repetitive database calls
  2. GET succeeds on the query and writes are routed through a separately authorized API page
  3. Authorized users can open the query data view and inspect the expected columns and sums
  4. Sample joined output contains correct child rows per parent without Cartesian multiplication

Explanation

Correct Answer

C:

Authorized users can open the query data view and inspect the expected columns and sums. This is stronger than an unrelated health check because the desired design action is use a normal query object suitable for viewing its dataset in the application, and a normal query can present its dataset in the client, while api queries are designed for web service consumption. The local requirement is: A controller needs analysts to open an aggregated dataset interactively from within Business Central.

Incorrect Answers

A:

This would verify evaluate replacing the record loop with a database-backed query and aggregation, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A controller needs analysts to open an aggregated dataset interactively from within Business Central. The decisive local proof is authorized users can open the query data view and inspect the expected columns and sums.

B:

This would verify separate read-only api query responsibilities from write-capable api page endpoints, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A controller needs analysts to open an aggregated dataset interactively from within Business Central. The decisive local proof is authorized users can open the query data view and inspect the expected columns and sums.

D:

This would verify create a query object with linked dataitems and explicit join relationships, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A controller needs analysts to open an aggregated dataset interactively from within Business Central. The decisive local proof is authorized users can open the query data view and inspect the expected columns and sums.

Question 468

A controller needs analysts to open an aggregated dataset interactively from within Business Central. A targeted trial still reproduces the original gap after the team attempted this change: Use a normal query object suitable for viewing its dataset in the application. Which repair directly addresses the remaining defect?

  1. Refactor the record traversal to a query with correct aggregation and benchmark the filtered result
  2. Route writes to the appropriate API page and remove mutating assumptions from the query endpoint
  3. Fix the query DataItemLink and SQL join semantics before adding more AL record loops
  4. Change the query type and discoverability properties to the intended in-client usage

Explanation

Correct Answer

D:

Change the query type and discoverability properties to the intended in-client usage. This directly addresses the remaining defect for the requirement—A controller needs analysts to open an aggregated dataset interactively from within Business Central. It restores the mechanism described here: a normal query can present its dataset in the client, while api queries are designed for web service consumption.

Incorrect Answers

A:

This correction is for the separate condition: An inventory extension performs repetitive database calls to create a simple grouped stock summary. It would not directly restore the intended behavior in this situation: A controller needs analysts to open an aggregated dataset interactively from within Business Central. Here, change the query type and discoverability properties to the intended in-client usage, because a normal query can present its dataset in the client, while api queries are designed for web service consumption.

B:

This correction is for the separate condition: A partner exposes an aggregated API query and expects PATCH and POST operations to update source records. It would not directly restore the intended behavior in this situation: A controller needs analysts to open an aggregated dataset interactively from within Business Central. Here, change the query type and discoverability properties to the intended in-client usage, because a normal query can present its dataset in the client, while api queries are designed for web service consumption.

C:

This correction is for the separate condition: A purchasing dashboard needs vendor details joined with the relevant purchase lines for quick analysis. It would not directly restore the intended behavior in this situation: A controller needs analysts to open an aggregated dataset interactively from within Business Central. Here, change the query type and discoverability properties to the intended in-client usage, because a normal query can present its dataset in the client, while api queries are designed for web service consumption.

Question 469

A finance team wants reusable interactive report-like query results in the Business Central UI. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Evaluate replacing the record loop with a database-backed query and aggregation
  2. Use a normal query object suitable for viewing its dataset in the application
  3. Separate read-only API query responsibilities from write-capable API page endpoints
  4. Create a query object with linked dataitems and explicit join relationships

Explanation

Correct Answer

B:

This targets the concrete requirement—A finance team wants reusable interactive report-like query results in the Business Central UI. A normal query can present its dataset in the client, while API queries are designed for web service consumption. The team can establish success when authorized users can open the query data view and inspect the expected columns and sums.

Incorrect Answers

A:

This choice primarily fits a different requirement: A slow AL routine loops through a large invoice table to construct totals one record at a time. There, queries can move joins and grouping nearer the data source and reduce redundant al record iterations. In the current situation, A finance team wants reusable interactive report-like query results in the Business Central UI. A normal query can present its dataset in the client, while API queries are designed for web service consumption. Acceptance requires authorized users can open the query data view and inspect the expected columns and sums.

C:

This choice primarily fits a different requirement: An API query joins several dimensions but the client tries to use it to submit a purchase document. There, api query objects do not provide entity crud; writable entities require an appropriate api page and business rules. In the current situation, A finance team wants reusable interactive report-like query results in the Business Central UI. A normal query can present its dataset in the client, while API queries are designed for web service consumption. Acceptance requires authorized users can open the query data view and inspect the expected columns and sums.

D:

This choice primarily fits a different requirement: A reporting team needs a joined view of customers and their invoices without iterating each customer in AL code. There, query dataitems define the tables and links for one combined rowset of related records. In the current situation, A finance team wants reusable interactive report-like query results in the Business Central UI. A normal query can present its dataset in the client, while API queries are designed for web service consumption. Acceptance requires authorized users can open the query data view and inspect the expected columns and sums.

Question 470

A finance team wants reusable interactive report-like query results in the Business Central UI. The developer recommends the following change: Use a normal query object suitable for viewing its dataset in the application. Which technical explanation most directly justifies it in this case?

  1. Queries can move joins and grouping nearer the data source and reduce redundant AL record iterations
  2. API query objects do not provide entity CRUD; writable entities require an appropriate API page and business rules
  3. A normal query can present its dataset in the client, while API queries are designed for web service consumption
  4. Query dataitems define the tables and links for one combined rowset of related records

Explanation

Correct Answer

C:

A normal query can present its dataset in the client, while API queries are designed for web service consumption. It connects the proposed action to the exact failure or requirement—A finance team wants reusable interactive report-like query results in the Business Central UI. Confirmation would be authorized users can open the query data view and inspect the expected columns and sums.

Incorrect Answers

A:

That mechanism explains why the alternative action—evaluate replacing the record loop with a database-backed query and aggregation—helps in another case. It does not justify the proposed fix here; a normal query can present its dataset in the client, while api queries are designed for web service consumption. The distinguishing requirement is: A finance team wants reusable interactive report-like query results in the Business Central UI.

B:

That mechanism explains why the alternative action—separate read-only api query responsibilities from write-capable api page endpoints—helps in another case. It does not justify the proposed fix here; a normal query can present its dataset in the client, while api queries are designed for web service consumption. The distinguishing requirement is: A finance team wants reusable interactive report-like query results in the Business Central UI.

D:

That mechanism explains why the alternative action—create a query object with linked dataitems and explicit join relationships—helps in another case. It does not justify the proposed fix here; a normal query can present its dataset in the client, while api queries are designed for web service consumption. The distinguishing requirement is: A finance team wants reusable interactive report-like query results in the Business Central UI.


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