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Microsoft MB-820 Premium Bundle
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 46

Question 450

A month-end reconciliation should include only posted transactions from the fiscal period. The developer recommends the following change: Apply the right filters to query dataitems or columns before aggregation. 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. Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records
  3. A normal query can present its dataset in the client, while API queries are designed for web service consumption
  4. Queries can move joins and grouping nearer the data source and reduce redundant AL record iterations

Explanation

Correct Answer

B:

Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. It connects the proposed action to the exact failure or requirement—A month-end reconciliation should include only posted transactions from the fiscal period. Confirmation would be results exclude records outside the filter and totals match the same filtered scope.

Incorrect Answers

A:

That mechanism explains why the alternative action—use a pagetype api query for a read-only joined or aggregated endpoint—helps in another case. It does not justify the proposed fix here; query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The distinguishing requirement is: A month-end reconciliation should include only posted transactions from the fiscal period.

C:

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; query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The distinguishing requirement is: A month-end reconciliation should include only posted transactions from the fiscal period.

D:

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; query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The distinguishing requirement is: A month-end reconciliation should include only posted transactions from the fiscal period.

Question 451

A month-end reconciliation should include only posted transactions from the fiscal period. The team implemented a change aligned with this plan: Apply the right filters to query dataitems or columns before aggregation. Which acceptance result specifically verifies that the reported problem is resolved?

  1. The endpoint returns the joined or aggregated data and rejects write operations
  2. Authorized users can open the query data view and inspect the expected columns and sums
  3. Results exclude records outside the filter and totals match the same filtered scope
  4. A benchmark on representative data shows correct totals and fewer repetitive database calls

Explanation

Correct Answer

C:

Results exclude records outside the filter and totals match the same filtered scope. This is stronger than an unrelated health check because the desired design action is apply the right filters to query dataitems or columns before aggregation, and query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The local requirement is: A month-end reconciliation should include only posted transactions from the fiscal period.

Incorrect Answers

A:

This would verify use a pagetype api query for a read-only joined or aggregated endpoint, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A month-end reconciliation should include only posted transactions from the fiscal period. The decisive local proof is results exclude records outside the filter and totals match the same filtered scope.

B:

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 month-end reconciliation should include only posted transactions from the fiscal period. The decisive local proof is results exclude records outside the filter and totals match the same filtered scope.

D:

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 month-end reconciliation should include only posted transactions from the fiscal period. The decisive local proof is results exclude records outside the filter and totals match the same filtered scope.

Question 452

A month-end reconciliation should include only posted transactions from the fiscal period. A targeted trial still reproduces the original gap after the team attempted this change: Apply the right filters to query dataitems or columns before aggregation. Which repair directly addresses the remaining defect?

  1. Replace the incorrect API page model with a query type API object and publish its versioned endpoint
  2. Change the query type and discoverability properties to the intended in-client usage
  3. Refactor the record traversal to a query with correct aggregation and benchmark the filtered result
  4. Repair filters and their placement in the query object, then rerun the constrained fixture

Explanation

Correct Answer

D:

Repair filters and their placement in the query object, then rerun the constrained fixture. This directly addresses the remaining defect for the requirement—A month-end reconciliation should include only posted transactions from the fiscal period. It restores the mechanism described here: query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

Incorrect Answers

A:

This correction is for the separate condition: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. It would not directly restore the intended behavior in this situation: A month-end reconciliation should include only posted transactions from the fiscal period. Here, repair filters and their placement in the query object, then rerun the constrained fixture, because query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

B:

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 month-end reconciliation should include only posted transactions from the fiscal period. Here, repair filters and their placement in the query object, then rerun the constrained fixture, because query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

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 month-end reconciliation should include only posted transactions from the fiscal period. Here, repair filters and their placement in the query object, then rerun the constrained fixture, because query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

Question 453

A warehouse query must return only open records for one location and document status. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Use a PageType API query for a read-only joined or aggregated endpoint
  2. Apply the right filters to query dataitems or columns before aggregation
  3. Use a normal query object suitable for viewing its dataset in the application
  4. Evaluate replacing the record loop with a database-backed query and aggregation

Explanation

Correct Answer

B:

This targets the concrete requirement—A warehouse query must return only open records for one location and document status. Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The team can establish success when results exclude records outside the filter and totals match the same filtered scope.

Incorrect Answers

A:

This choice primarily fits a different requirement: A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. There, Business Central api queries expose read-only odata data and can join sources, unlike api pages intended for entity crud. In the current situation, A warehouse query must return only open records for one location and document status. Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. Acceptance requires results exclude records outside the filter and totals match the same filtered scope.

C:

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 warehouse query must return only open records for one location and document status. Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. Acceptance requires results exclude records outside the filter and totals match the same filtered scope.

D:

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 warehouse query must return only open records for one location and document status. Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. Acceptance requires results exclude records outside the filter and totals match the same filtered scope.

Question 454

A warehouse query must return only open records for one location and document status. The developer recommends the following change: Apply the right filters to query dataitems or columns before aggregation. 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. Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records
  4. Queries can move joins and grouping nearer the data source and reduce redundant AL record iterations

Explanation

Correct Answer

C:

Query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. It connects the proposed action to the exact failure or requirement—A warehouse query must return only open records for one location and document status. Confirmation would be results exclude records outside the filter and totals match the same filtered scope.

Incorrect Answers

A:

That mechanism explains why the alternative action—use a pagetype api query for a read-only joined or aggregated endpoint—helps in another case. It does not justify the proposed fix here; query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The distinguishing requirement is: A warehouse query must return only open records for one location and document status.

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; query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The distinguishing requirement is: A warehouse query must return only open records for one location and document status.

D:

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; query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The distinguishing requirement is: A warehouse query must return only open records for one location and document status.

Question 455

A warehouse query must return only open records for one location and document status. The team implemented a change aligned with this plan: Apply the right filters to query dataitems or columns before aggregation. Which acceptance result specifically verifies that the reported problem is resolved?

  1. The endpoint returns the joined or aggregated data and rejects write operations
  2. Authorized users can open the query data view and inspect the expected columns and sums
  3. A benchmark on representative data shows correct totals and fewer repetitive database calls
  4. Results exclude records outside the filter and totals match the same filtered scope

Explanation

Correct Answer

D:

Results exclude records outside the filter and totals match the same filtered scope. This is stronger than an unrelated health check because the desired design action is apply the right filters to query dataitems or columns before aggregation, and query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records. The local requirement is: A warehouse query must return only open records for one location and document status.

Incorrect Answers

A:

This would verify use a pagetype api query for a read-only joined or aggregated endpoint, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A warehouse query must return only open records for one location and document status. The decisive local proof is results exclude records outside the filter and totals match the same filtered scope.

B:

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 warehouse query must return only open records for one location and document status. The decisive local proof is results exclude records outside the filter and totals match the same filtered scope.

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 warehouse query must return only open records for one location and document status. The decisive local proof is results exclude records outside the filter and totals match the same filtered scope.

Question 456

A warehouse query must return only open records for one location and document status. A targeted trial still reproduces the original gap after the team attempted this change: Apply the right filters to query dataitems or columns before aggregation. Which repair directly addresses the remaining defect?

  1. Repair filters and their placement in the query object, then rerun the constrained fixture
  2. Replace the incorrect API page model with a query type API object and publish its versioned endpoint
  3. Change the query type and discoverability properties to the intended in-client usage
  4. Refactor the record traversal to a query with correct aggregation and benchmark the filtered result

Explanation

Correct Answer

A:

Repair filters and their placement in the query object, then rerun the constrained fixture. This directly addresses the remaining defect for the requirement—A warehouse query must return only open records for one location and document status. It restores the mechanism described here: query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

Incorrect Answers

B:

This correction is for the separate condition: A BI service wants a versioned REST endpoint returning aggregated order metrics but cannot mutate records. It would not directly restore the intended behavior in this situation: A warehouse query must return only open records for one location and document status. Here, repair filters and their placement in the query object, then rerun the constrained fixture, because query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

C:

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 warehouse query must return only open records for one location and document status. Here, repair filters and their placement in the query object, then rerun the constrained fixture, because query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

D:

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 warehouse query must return only open records for one location and document status. Here, repair filters and their placement in the query object, then rerun the constrained fixture, because query filters reduce the source rowset so subsequent joins and aggregates operate on relevant records.

Question 457

A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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. Use a PageType API query for a read-only joined or aggregated endpoint
  4. Separate read-only API query responsibilities from write-capable API page endpoints

Explanation

Correct Answer

C:

This targets the concrete requirement—A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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.

D:

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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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 458

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

Explanation

Correct Answer

D:

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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. Confirmation would be the endpoint returns the joined or aggregated data and rejects write operations.

Incorrect Answers

A:

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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata.

B:

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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata.

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; 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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata.

Question 459

A mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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. The endpoint returns the joined or aggregated data and rejects write operations
  2. Authorized users can open the query data view and inspect the expected columns and sums
  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

A:

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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata.

Incorrect Answers

B:

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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. 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 mobile integration needs a read-only joined dataset combining inventory entries and item metadata. The decisive local proof is the endpoint returns the joined or aggregated data and rejects write operations.

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.


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