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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 37

Question 360

A warehouse team needs to run a daily XMLport extraction with user-specified location and status criteria. A targeted trial still reproduces the original gap after the team attempted this change: Expose the appropriate XMLport request parameters and apply them to source filtering. Which repair directly addresses the remaining defect?

  1. Correct the request parameter binding and apply filters before the XMLport exports the records
  2. Fix the XMLport node hierarchy and field mappings before trying unrelated report layouts
  3. Correct XMLport Format and field separator/delimiter settings to match the actual source file
  4. Move validation into the right XMLport or table validation path and test bad-row handling

Explanation

Correct Answer

A:

Correct the request parameter binding and apply filters before the XMLport exports the records. This directly addresses the remaining defect for the requirement—A warehouse team needs to run a daily XMLport extraction with user-specified location and status criteria. It restores the mechanism described here: xmlport request-page and dataitem filtering control which records the import/export traversal processes.

Incorrect Answers

B:

This correction is for the separate condition: A vendor sends a nested XML shipment file with repeated lines that must be exported into supported records. It would not directly restore the intended behavior in this situation: A warehouse team needs to run a daily XMLport extraction with user-specified location and status criteria. Here, correct the request parameter binding and apply filters before the xmlport exports the records, because xmlport request-page and dataitem filtering control which records the import/export traversal processes.

C:

This correction is for the separate condition: A logistics system exports tab-delimited records with a known field order for import into Business Central. It would not directly restore the intended behavior in this situation: A warehouse team needs to run a daily XMLport extraction with user-specified location and status criteria. Here, correct the request parameter binding and apply filters before the xmlport exports the records, because xmlport request-page and dataitem filtering control which records the import/export traversal processes.

D:

This correction is for the separate condition: A supplier import carries duplicate external keys and must enforce local data validation. It would not directly restore the intended behavior in this situation: A warehouse team needs to run a daily XMLport extraction with user-specified location and status criteria. Here, correct the request parameter binding and apply filters before the xmlport exports the records, because xmlport request-page and dataitem filtering control which records the import/export traversal processes.

Question 361

Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Subscribe an AL event handler to the appropriate published event
  2. Define an AL interface and implement it in the provider codeunits
  3. Extract the shared business logic into a codeunit with reusable procedures
  4. Use an install codeunit and guard setup initialization for first installation

Explanation

Correct Answer

C:

This targets the concrete requirement—Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Codeunits encapsulate callable AL business logic independent of a page's visual layout. The team can establish success when different callers produce consistent results for the same representative business data.

Incorrect Answers

A:

This choice primarily fits a different requirement: A partner needs to react when standard sales posting completes without directly rewriting the posting routine. There, event subscribers add behavior at published integration points while keeping the standard publisher code intact. In the current situation, Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Codeunits encapsulate callable AL business logic independent of a page's visual layout. Acceptance requires different callers produce consistent results for the same representative business data.

B:

This choice primarily fits a different requirement: A logistics vendor must swap carrier pricing implementations based on an enum selection while calling the same method signature. There, interfaces define a contract and enable polymorphic dispatch without hard-coding a concrete provider into every caller. In the current situation, Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Codeunits encapsulate callable AL business logic independent of a page's visual layout. Acceptance requires different callers produce consistent results for the same representative business data.

D:

This choice primarily fits a different requirement: A new extension needs initial configuration records when first installed into a tenant. There, an install codeunit performs initial tenant setup; repeated deployment must not reinitialize established user data. In the current situation, Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Codeunits encapsulate callable AL business logic independent of a page's visual layout. Acceptance requires different callers produce consistent results for the same representative business data.

Question 362

Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. The developer recommends the following change: Extract the shared business logic into a codeunit with reusable procedures. Which technical explanation most directly justifies it in this case?

  1. Event subscribers add behavior at published integration points while keeping the standard publisher code intact
  2. Interfaces define a contract and enable polymorphic dispatch without hard-coding a concrete provider into every caller
  3. An install codeunit performs initial tenant setup; repeated deployment must not reinitialize established user data
  4. Codeunits encapsulate callable AL business logic independent of a page's visual layout

Explanation

Correct Answer

D:

Codeunits encapsulate callable AL business logic independent of a page's visual layout. It connects the proposed action to the exact failure or requirement—Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Confirmation would be different callers produce consistent results for the same representative business data.

Incorrect Answers

A:

That mechanism explains why the alternative action—subscribe an al event handler to the appropriate published event—helps in another case. It does not justify the proposed fix here; codeunits encapsulate callable al business logic independent of a page's visual layout. The distinguishing requirement is: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy.

B:

That mechanism explains why the alternative action—define an al interface and implement it in the provider codeunits—helps in another case. It does not justify the proposed fix here; codeunits encapsulate callable al business logic independent of a page's visual layout. The distinguishing requirement is: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy.

C:

That mechanism explains why the alternative action—use an install codeunit and guard setup initialization for first installation—helps in another case. It does not justify the proposed fix here; codeunits encapsulate callable al business logic independent of a page's visual layout. The distinguishing requirement is: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy.

Question 363

Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. The team implemented a change aligned with this plan: Extract the shared business logic into a codeunit with reusable procedures. Which acceptance result specifically verifies that the reported problem is resolved?

  1. Different callers produce consistent results for the same representative business data
  2. A sample standard transaction triggers the subscriber once with correct event parameters
  3. Switching the selected provider changes implementation while all callers use the same documented interface
  4. A fresh install creates defaults while an upgrade leaves existing configured values untouched

Explanation

Correct Answer

A:

Different callers produce consistent results for the same representative business data. This is stronger than an unrelated health check because the desired design action is extract the shared business logic into a codeunit with reusable procedures, and codeunits encapsulate callable al business logic independent of a page's visual layout. The local requirement is: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy.

Incorrect Answers

B:

This would verify subscribe an al event handler to the appropriate published event, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. The decisive local proof is different callers produce consistent results for the same representative business data.

C:

This would verify define an al interface and implement it in the provider codeunits, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. The decisive local proof is different callers produce consistent results for the same representative business data.

D:

This would verify use an install codeunit and guard setup initialization for first installation, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. The decisive local proof is different callers produce consistent results for the same representative business data.

Question 364

Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. A targeted trial still reproduces the original gap after the team attempted this change: Extract the shared business logic into a codeunit with reusable procedures. Which repair directly addresses the remaining defect?

  1. Correct the subscribed event, signature or subscriber filtering rather than patching the standard posting procedure
  2. Consolidate duplicated logic into the codeunit and update the callers to invoke it
  3. Align the codeunit implementations with the interface method signatures and correct provider selection
  4. Correct the install trigger and idempotency checks so setup is initialized only in the intended installation state

Explanation

Correct Answer

B:

Consolidate duplicated logic into the codeunit and update the callers to invoke it. This directly addresses the remaining defect for the requirement—Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. It restores the mechanism described here: codeunits encapsulate callable al business logic independent of a page's visual layout.

Incorrect Answers

A:

This correction is for the separate condition: An extension must record shipment compliance data after a standard lifecycle event without modifying Microsoft code. It would not directly restore the intended behavior in this situation: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Here, consolidate duplicated logic into the codeunit and update the callers to invoke it, because codeunits encapsulate callable al business logic independent of a page's visual layout.

C:

This correction is for the separate condition: A tax add-on supports multiple rule providers that all expose the same calculation contract. It would not directly restore the intended behavior in this situation: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Here, consolidate duplicated logic into the codeunit and update the callers to invoke it, because codeunits encapsulate callable al business logic independent of a page's visual layout.

D:

This correction is for the separate condition: A fiscal app requires a default setup row the first time it is installed for a customer. It would not directly restore the intended behavior in this situation: Several AL pages duplicate the same invoice validation code and it behaves differently in each copy. Here, consolidate duplicated logic into the codeunit and update the callers to invoke it, because codeunits encapsulate callable al business logic independent of a page's visual layout.

Question 365

Three extensions all implement the same freight-cost calculation with small inconsistent differences. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Subscribe an AL event handler to the appropriate published event
  2. Define an AL interface and implement it in the provider codeunits
  3. Use an install codeunit and guard setup initialization for first installation
  4. Extract the shared business logic into a codeunit with reusable procedures

Explanation

Correct Answer

D:

This targets the concrete requirement—Three extensions all implement the same freight-cost calculation with small inconsistent differences. Codeunits encapsulate callable AL business logic independent of a page's visual layout. The team can establish success when different callers produce consistent results for the same representative business data.

Incorrect Answers

A:

This choice primarily fits a different requirement: A partner needs to react when standard sales posting completes without directly rewriting the posting routine. There, event subscribers add behavior at published integration points while keeping the standard publisher code intact. In the current situation, Three extensions all implement the same freight-cost calculation with small inconsistent differences. Codeunits encapsulate callable AL business logic independent of a page's visual layout. Acceptance requires different callers produce consistent results for the same representative business data.

B:

This choice primarily fits a different requirement: A logistics vendor must swap carrier pricing implementations based on an enum selection while calling the same method signature. There, interfaces define a contract and enable polymorphic dispatch without hard-coding a concrete provider into every caller. In the current situation, Three extensions all implement the same freight-cost calculation with small inconsistent differences. Codeunits encapsulate callable AL business logic independent of a page's visual layout. Acceptance requires different callers produce consistent results for the same representative business data.

C:

This choice primarily fits a different requirement: A new extension needs initial configuration records when first installed into a tenant. There, an install codeunit performs initial tenant setup; repeated deployment must not reinitialize established user data. In the current situation, Three extensions all implement the same freight-cost calculation with small inconsistent differences. Codeunits encapsulate callable AL business logic independent of a page's visual layout. Acceptance requires different callers produce consistent results for the same representative business data.

Question 366

Three extensions all implement the same freight-cost calculation with small inconsistent differences. The developer recommends the following change: Extract the shared business logic into a codeunit with reusable procedures. Which technical explanation most directly justifies it in this case?

  1. Codeunits encapsulate callable AL business logic independent of a page's visual layout
  2. Event subscribers add behavior at published integration points while keeping the standard publisher code intact
  3. Interfaces define a contract and enable polymorphic dispatch without hard-coding a concrete provider into every caller
  4. An install codeunit performs initial tenant setup; repeated deployment must not reinitialize established user data

Explanation

Correct Answer

A:

Codeunits encapsulate callable AL business logic independent of a page's visual layout. It connects the proposed action to the exact failure or requirement—Three extensions all implement the same freight-cost calculation with small inconsistent differences. Confirmation would be different callers produce consistent results for the same representative business data.

Incorrect Answers

B:

That mechanism explains why the alternative action—subscribe an al event handler to the appropriate published event—helps in another case. It does not justify the proposed fix here; codeunits encapsulate callable al business logic independent of a page's visual layout. The distinguishing requirement is: Three extensions all implement the same freight-cost calculation with small inconsistent differences.

C:

That mechanism explains why the alternative action—define an al interface and implement it in the provider codeunits—helps in another case. It does not justify the proposed fix here; codeunits encapsulate callable al business logic independent of a page's visual layout. The distinguishing requirement is: Three extensions all implement the same freight-cost calculation with small inconsistent differences.

D:

That mechanism explains why the alternative action—use an install codeunit and guard setup initialization for first installation—helps in another case. It does not justify the proposed fix here; codeunits encapsulate callable al business logic independent of a page's visual layout. The distinguishing requirement is: Three extensions all implement the same freight-cost calculation with small inconsistent differences.

Question 367

Three extensions all implement the same freight-cost calculation with small inconsistent differences. The team implemented a change aligned with this plan: Extract the shared business logic into a codeunit with reusable procedures. Which acceptance result specifically verifies that the reported problem is resolved?

  1. A sample standard transaction triggers the subscriber once with correct event parameters
  2. Different callers produce consistent results for the same representative business data
  3. Switching the selected provider changes implementation while all callers use the same documented interface
  4. A fresh install creates defaults while an upgrade leaves existing configured values untouched

Explanation

Correct Answer

B:

Different callers produce consistent results for the same representative business data. This is stronger than an unrelated health check because the desired design action is extract the shared business logic into a codeunit with reusable procedures, and codeunits encapsulate callable al business logic independent of a page's visual layout. The local requirement is: Three extensions all implement the same freight-cost calculation with small inconsistent differences.

Incorrect Answers

A:

This would verify subscribe an al event handler to the appropriate published event, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: Three extensions all implement the same freight-cost calculation with small inconsistent differences. The decisive local proof is different callers produce consistent results for the same representative business data.

C:

This would verify define an al interface and implement it in the provider codeunits, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: Three extensions all implement the same freight-cost calculation with small inconsistent differences. The decisive local proof is different callers produce consistent results for the same representative business data.

D:

This would verify use an install codeunit and guard setup initialization for first installation, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: Three extensions all implement the same freight-cost calculation with small inconsistent differences. The decisive local proof is different callers produce consistent results for the same representative business data.

Question 368

Three extensions all implement the same freight-cost calculation with small inconsistent differences. A targeted trial still reproduces the original gap after the team attempted this change: Extract the shared business logic into a codeunit with reusable procedures. Which repair directly addresses the remaining defect?

  1. Correct the subscribed event, signature or subscriber filtering rather than patching the standard posting procedure
  2. Align the codeunit implementations with the interface method signatures and correct provider selection
  3. Consolidate duplicated logic into the codeunit and update the callers to invoke it
  4. Correct the install trigger and idempotency checks so setup is initialized only in the intended installation state

Explanation

Correct Answer

C:

Consolidate duplicated logic into the codeunit and update the callers to invoke it. This directly addresses the remaining defect for the requirement—Three extensions all implement the same freight-cost calculation with small inconsistent differences. It restores the mechanism described here: codeunits encapsulate callable al business logic independent of a page's visual layout.

Incorrect Answers

A:

This correction is for the separate condition: An extension must record shipment compliance data after a standard lifecycle event without modifying Microsoft code. It would not directly restore the intended behavior in this situation: Three extensions all implement the same freight-cost calculation with small inconsistent differences. Here, consolidate duplicated logic into the codeunit and update the callers to invoke it, because codeunits encapsulate callable al business logic independent of a page's visual layout.

B:

This correction is for the separate condition: A tax add-on supports multiple rule providers that all expose the same calculation contract. It would not directly restore the intended behavior in this situation: Three extensions all implement the same freight-cost calculation with small inconsistent differences. Here, consolidate duplicated logic into the codeunit and update the callers to invoke it, because codeunits encapsulate callable al business logic independent of a page's visual layout.

D:

This correction is for the separate condition: A fiscal app requires a default setup row the first time it is installed for a customer. It would not directly restore the intended behavior in this situation: Three extensions all implement the same freight-cost calculation with small inconsistent differences. Here, consolidate duplicated logic into the codeunit and update the callers to invoke it, because codeunits encapsulate callable al business logic independent of a page's visual layout.

Question 369

A partner needs to react when standard sales posting completes without directly rewriting the posting routine. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Subscribe an AL event handler to the appropriate published event
  2. Define an AL interface and implement it in the provider codeunits
  3. Use an install codeunit and guard setup initialization for first installation
  4. Implement a controlled upgrade codeunit to migrate records during extension upgrade

Explanation

Correct Answer

A:

This targets the concrete requirement—A partner needs to react when standard sales posting completes without directly rewriting the posting routine. Event subscribers add behavior at published integration points while keeping the standard publisher code intact. The team can establish success when a sample standard transaction triggers the subscriber once with correct event parameters.

Incorrect Answers

B:

This choice primarily fits a different requirement: A logistics vendor must swap carrier pricing implementations based on an enum selection while calling the same method signature. There, interfaces define a contract and enable polymorphic dispatch without hard-coding a concrete provider into every caller. In the current situation, A partner needs to react when standard sales posting completes without directly rewriting the posting routine. Event subscribers add behavior at published integration points while keeping the standard publisher code intact. Acceptance requires a sample standard transaction triggers the subscriber once with correct event parameters.

C:

This choice primarily fits a different requirement: A new extension needs initial configuration records when first installed into a tenant. There, an install codeunit performs initial tenant setup; repeated deployment must not reinitialize established user data. In the current situation, A partner needs to react when standard sales posting completes without directly rewriting the posting routine. Event subscribers add behavior at published integration points while keeping the standard publisher code intact. Acceptance requires a sample standard transaction triggers the subscriber once with correct event parameters.

D:

This choice primarily fits a different requirement: A version update renames the internal customer loyalty schema and existing data must be carried forward. There, upgrade codeunits are designed to transform previously installed extension data when application versions change. In the current situation, A partner needs to react when standard sales posting completes without directly rewriting the posting routine. Event subscribers add behavior at published integration points while keeping the standard publisher code intact. Acceptance requires a sample standard transaction triggers the subscriber once with correct event parameters.

Question 370

A partner needs to react when standard sales posting completes without directly rewriting the posting routine. The developer recommends the following change: Subscribe an AL event handler to the appropriate published event. Which technical explanation most directly justifies it in this case?

  1. Interfaces define a contract and enable polymorphic dispatch without hard-coding a concrete provider into every caller
  2. Event subscribers add behavior at published integration points while keeping the standard publisher code intact
  3. An install codeunit performs initial tenant setup; repeated deployment must not reinitialize established user data
  4. Upgrade codeunits are designed to transform previously installed extension data when application versions change

Explanation

Correct Answer

B:

Event subscribers add behavior at published integration points while keeping the standard publisher code intact. It connects the proposed action to the exact failure or requirement—A partner needs to react when standard sales posting completes without directly rewriting the posting routine. Confirmation would be a sample standard transaction triggers the subscriber once with correct event parameters.

Incorrect Answers

A:

That mechanism explains why the alternative action—define an al interface and implement it in the provider codeunits—helps in another case. It does not justify the proposed fix here; event subscribers add behavior at published integration points while keeping the standard publisher code intact. The distinguishing requirement is: A partner needs to react when standard sales posting completes without directly rewriting the posting routine.

C:

That mechanism explains why the alternative action—use an install codeunit and guard setup initialization for first installation—helps in another case. It does not justify the proposed fix here; event subscribers add behavior at published integration points while keeping the standard publisher code intact. The distinguishing requirement is: A partner needs to react when standard sales posting completes without directly rewriting the posting routine.

D:

That mechanism explains why the alternative action—implement a controlled upgrade codeunit to migrate records during extension upgrade—helps in another case. It does not justify the proposed fix here; event subscribers add behavior at published integration points while keeping the standard publisher code intact. The distinguishing requirement is: A partner needs to react when standard sales posting completes without directly rewriting the posting routine.


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