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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 16

Question 150

A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. The developer recommends the following change: Set VS Code breakpoints and debug the extension execution path in the sandbox. Which technical explanation most directly justifies it in this case?

  1. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session
  2. AL multilingual support relies on resources that map caption/label identifiers to localized translations
  3. The AL debugger exposes call flow and variable state at the problematic trigger or subscriber
  4. Installation logic initializes data and configuration when the extension is installed, independently of subsequent upgrades

Explanation

Correct Answer

C:

The AL debugger exposes call flow and variable state at the problematic trigger or subscriber. It connects the proposed action to the exact failure or requirement—A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. Confirmation would be a reproducing transaction reaches the breakpoint and the inspected values explain the failing branch.

Incorrect Answers

A:

That mechanism explains why the alternative action—build the al project into an .app package and promote the tested artifact through the release process—helps in another case. It does not justify the proposed fix here; the al debugger exposes call flow and variable state at the problematic trigger or subscriber. The distinguishing requirement is: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox.

B:

That mechanism explains why the alternative action—generate and maintain xlf translations and use translatable al captions and labels—helps in another case. It does not justify the proposed fix here; the al debugger exposes call flow and variable state at the problematic trigger or subscriber. The distinguishing requirement is: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox.

D:

That mechanism explains why the alternative action—include the appropriate install codeunit and verify its first-install behavior—helps in another case. It does not justify the proposed fix here; the al debugger exposes call flow and variable state at the problematic trigger or subscriber. The distinguishing requirement is: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox.

Question 151

A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. The team implemented a change aligned with this plan: Set VS Code breakpoints and debug the extension execution path in the sandbox. Which acceptance result specifically verifies that the reported problem is resolved?

  1. The promoted package ID and version match the tested build and installation passes smoke checks
  2. The published language pack shows translated labels for the selected user language and no untranslated hardcoded strings in scope
  3. A fresh test tenant installs the app and receives the expected setup records exactly once
  4. A reproducing transaction reaches the breakpoint and the inspected values explain the failing branch

Explanation

Correct Answer

D:

A reproducing transaction reaches the breakpoint and the inspected values explain the failing branch. This is stronger than an unrelated health check because the desired design action is set vs code breakpoints and debug the extension execution path in the sandbox, and the al debugger exposes call flow and variable state at the problematic trigger or subscriber. The local requirement is: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox.

Incorrect Answers

A:

This would verify build the al project into an .app package and promote the tested artifact through the release process, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. The decisive local proof is a reproducing transaction reaches the breakpoint and the inspected values explain the failing branch.

B:

This would verify generate and maintain xlf translations and use translatable al captions and labels, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. The decisive local proof is a reproducing transaction reaches the breakpoint and the inspected values explain the failing branch.

C:

This would verify include the appropriate install codeunit and verify its first-install behavior, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. The decisive local proof is a reproducing transaction reaches the breakpoint and the inspected values explain the failing branch.

Question 152

A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. A targeted trial still reproduces the original gap after the team attempted this change: Set VS Code breakpoints and debug the extension execution path in the sandbox. Which repair directly addresses the remaining defect?

  1. Point the debugger at the correct environment and executable path, then reproduce and inspect the failing AL call
  2. Rebuild from the approved source revision and deploy that package rather than an untracked local copy
  3. Regenerate or correct translation units, remove hardcoded UI text, and ship matching XLF resources
  4. Add or correct the install hook and rerun fresh-install tests with clean tenant state

Explanation

Correct Answer

A:

Point the debugger at the correct environment and executable path, then reproduce and inspect the failing AL call. This directly addresses the remaining defect for the requirement—A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. It restores the mechanism described here: the al debugger exposes call flow and variable state at the problematic trigger or subscriber.

Incorrect Answers

B:

This correction is for the separate condition: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. It would not directly restore the intended behavior in this situation: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. Here, point the debugger at the correct environment and executable path, then reproduce and inspect the failing al call, because the al debugger exposes call flow and variable state at the problematic trigger or subscriber.

C:

This correction is for the separate condition: A regional service team updates an AL UI app but German users still see hardcoded help strings. It would not directly restore the intended behavior in this situation: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. Here, point the debugger at the correct environment and executable path, then reproduce and inspect the failing al call, because the al debugger exposes call flow and variable state at the problematic trigger or subscriber.

D:

This correction is for the separate condition: A new tenant install requires initial setup records and default feature flags before users start work. It would not directly restore the intended behavior in this situation: A supplier rebate extension fails only in a particular codeunit path and support needs to inspect live variables safely in a sandbox. Here, point the debugger at the correct environment and executable path, then reproduce and inspect the failing al call, because the al debugger exposes call flow and variable state at the problematic trigger or subscriber.

Question 153

A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Generate and maintain XLF translations and use translatable AL captions and labels
  2. Include the appropriate install codeunit and verify its first-install behavior
  3. Build the AL project into an .app package and promote the tested artifact through the release process
  4. Implement an upgrade codeunit and rehearse migration on representative historical records

Explanation

Correct Answer

C:

This targets the concrete requirement—A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The team can establish success when the promoted package id and version match the tested build and installation passes smoke checks.

Incorrect Answers

A:

This choice primarily fits a different requirement: A published translation file shows English labels for a Spanish rollout despite translated captions being available. There, al multilingual support relies on resources that map caption/label identifiers to localized translations. In the current situation, A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. Acceptance requires the promoted package id and version match the tested build and installation passes smoke checks.

B:

This choice primarily fits a different requirement: A warehouse extension is published into a sandbox without executing its post-install setup routine. There, installation logic initializes data and configuration when the extension is installed, independently of subsequent upgrades. In the current situation, A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. Acceptance requires the promoted package id and version match the tested build and installation passes smoke checks.

D:

This choice primarily fits a different requirement: A data field changes structure in an extension update while existing invoice records must be migrated. There, upgrade logic maps existing tenant data to the new schema during an app version transition. In the current situation, A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. Acceptance requires the promoted package id and version match the tested build and installation passes smoke checks.

Question 154

A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. The developer recommends the following change: Build the AL project into an .app package and promote the tested artifact through the release process. Which technical explanation most directly justifies it in this case?

  1. AL multilingual support relies on resources that map caption/label identifiers to localized translations
  2. Installation logic initializes data and configuration when the extension is installed, independently of subsequent upgrades
  3. Upgrade logic maps existing tenant data to the new schema during an app version transition
  4. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session

Explanation

Correct Answer

D:

AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. It connects the proposed action to the exact failure or requirement—A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. Confirmation would be the promoted package id and version match the tested build and installation passes smoke checks.

Incorrect Answers

A:

That mechanism explains why the alternative action—generate and maintain xlf translations and use translatable al captions and labels—helps in another case. It does not justify the proposed fix here; al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The distinguishing requirement is: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation.

B:

That mechanism explains why the alternative action—include the appropriate install codeunit and verify its first-install behavior—helps in another case. It does not justify the proposed fix here; al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The distinguishing requirement is: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation.

C:

That mechanism explains why the alternative action—implement an upgrade codeunit and rehearse migration on representative historical records—helps in another case. It does not justify the proposed fix here; al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The distinguishing requirement is: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation.

Question 155

A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. The team implemented a change aligned with this plan: Build the AL project into an .app package and promote the tested artifact through the release process. Which acceptance result specifically verifies that the reported problem is resolved?

  1. The promoted package ID and version match the tested build and installation passes smoke checks
  2. The published language pack shows translated labels for the selected user language and no untranslated hardcoded strings in scope
  3. A fresh test tenant installs the app and receives the expected setup records exactly once
  4. An upgraded sandbox retains expected historical records and new lookups work after the migration

Explanation

Correct Answer

A:

The promoted package ID and version match the tested build and installation passes smoke checks. This is stronger than an unrelated health check because the desired design action is build the al project into an .app package and promote the tested artifact through the release process, and al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The local requirement is: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation.

Incorrect Answers

B:

This would verify generate and maintain xlf translations and use translatable al captions and labels, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. The decisive local proof is the promoted package id and version match the tested build and installation passes smoke checks.

C:

This would verify include the appropriate install codeunit and verify its first-install behavior, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. The decisive local proof is the promoted package id and version match the tested build and installation passes smoke checks.

D:

This would verify implement an upgrade codeunit and rehearse migration on representative historical records, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. The decisive local proof is the promoted package id and version match the tested build and installation passes smoke checks.

Question 156

A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. A targeted trial still reproduces the original gap after the team attempted this change: Build the AL project into an .app package and promote the tested artifact through the release process. Which repair directly addresses the remaining defect?

  1. Regenerate or correct translation units, remove hardcoded UI text, and ship matching XLF resources
  2. Rebuild from the approved source revision and deploy that package rather than an untracked local copy
  3. Add or correct the install hook and rerun fresh-install tests with clean tenant state
  4. Fix the upgrade codeunit's data conversion and validate the migration against a restored old-version dataset

Explanation

Correct Answer

B:

Rebuild from the approved source revision and deploy that package rather than an untracked local copy. This directly addresses the remaining defect for the requirement—A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. It restores the mechanism described here: al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

Incorrect Answers

A:

This correction is for the separate condition: A regional service team updates an AL UI app but German users still see hardcoded help strings. It would not directly restore the intended behavior in this situation: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. Here, rebuild from the approved source revision and deploy that package rather than an untracked local copy, because al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

C:

This correction is for the separate condition: A new tenant install requires initial setup records and default feature flags before users start work. It would not directly restore the intended behavior in this situation: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. Here, rebuild from the approved source revision and deploy that package rather than an untracked local copy, because al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

D:

This correction is for the separate condition: An add-on introduces a revised subscription key and upgrading a populated tenant loses legacy mappings. It would not directly restore the intended behavior in this situation: A partner needs to deliver a signed-off AL extension binary to an administrator without deploying from a developer workstation. Here, rebuild from the approved source revision and deploy that package rather than an untracked local copy, because al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

Question 157

A release engineer must move a tested finance extension into a managed deployment pipeline from source control. Which single AL development or architecture change best resolves this requirement without redesigning unrelated workflows?

  1. Generate and maintain XLF translations and use translatable AL captions and labels
  2. Include the appropriate install codeunit and verify its first-install behavior
  3. Implement an upgrade codeunit and rehearse migration on representative historical records
  4. Build the AL project into an .app package and promote the tested artifact through the release process

Explanation

Correct Answer

D:

This targets the concrete requirement—A release engineer must move a tested finance extension into a managed deployment pipeline from source control. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The team can establish success when the promoted package id and version match the tested build and installation passes smoke checks.

Incorrect Answers

A:

This choice primarily fits a different requirement: A published translation file shows English labels for a Spanish rollout despite translated captions being available. There, al multilingual support relies on resources that map caption/label identifiers to localized translations. In the current situation, A release engineer must move a tested finance extension into a managed deployment pipeline from source control. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. Acceptance requires the promoted package id and version match the tested build and installation passes smoke checks.

B:

This choice primarily fits a different requirement: A warehouse extension is published into a sandbox without executing its post-install setup routine. There, installation logic initializes data and configuration when the extension is installed, independently of subsequent upgrades. In the current situation, A release engineer must move a tested finance extension into a managed deployment pipeline from source control. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. Acceptance requires the promoted package id and version match the tested build and installation passes smoke checks.

C:

This choice primarily fits a different requirement: A data field changes structure in an extension update while existing invoice records must be migrated. There, upgrade logic maps existing tenant data to the new schema during an app version transition. In the current situation, A release engineer must move a tested finance extension into a managed deployment pipeline from source control. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. Acceptance requires the promoted package id and version match the tested build and installation passes smoke checks.

Question 158

A release engineer must move a tested finance extension into a managed deployment pipeline from source control. The developer recommends the following change: Build the AL project into an .app package and promote the tested artifact through the release process. Which technical explanation most directly justifies it in this case?

  1. AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session
  2. AL multilingual support relies on resources that map caption/label identifiers to localized translations
  3. Installation logic initializes data and configuration when the extension is installed, independently of subsequent upgrades
  4. Upgrade logic maps existing tenant data to the new schema during an app version transition

Explanation

Correct Answer

A:

AL packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. It connects the proposed action to the exact failure or requirement—A release engineer must move a tested finance extension into a managed deployment pipeline from source control. Confirmation would be the promoted package id and version match the tested build and installation passes smoke checks.

Incorrect Answers

B:

That mechanism explains why the alternative action—generate and maintain xlf translations and use translatable al captions and labels—helps in another case. It does not justify the proposed fix here; al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The distinguishing requirement is: A release engineer must move a tested finance extension into a managed deployment pipeline from source control.

C:

That mechanism explains why the alternative action—include the appropriate install codeunit and verify its first-install behavior—helps in another case. It does not justify the proposed fix here; al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The distinguishing requirement is: A release engineer must move a tested finance extension into a managed deployment pipeline from source control.

D:

That mechanism explains why the alternative action—implement an upgrade codeunit and rehearse migration on representative historical records—helps in another case. It does not justify the proposed fix here; al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The distinguishing requirement is: A release engineer must move a tested finance extension into a managed deployment pipeline from source control.

Question 159

A release engineer must move a tested finance extension into a managed deployment pipeline from source control. The team implemented a change aligned with this plan: Build the AL project into an .app package and promote the tested artifact through the release process. Which acceptance result specifically verifies that the reported problem is resolved?

  1. The published language pack shows translated labels for the selected user language and no untranslated hardcoded strings in scope
  2. The promoted package ID and version match the tested build and installation passes smoke checks
  3. A fresh test tenant installs the app and receives the expected setup records exactly once
  4. An upgraded sandbox retains expected historical records and new lookups work after the migration

Explanation

Correct Answer

B:

The promoted package ID and version match the tested build and installation passes smoke checks. This is stronger than an unrelated health check because the desired design action is build the al project into an .app package and promote the tested artifact through the release process, and al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session. The local requirement is: A release engineer must move a tested finance extension into a managed deployment pipeline from source control.

Incorrect Answers

A:

This would verify generate and maintain xlf translations and use translatable al captions and labels, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. The decisive local proof is the promoted package id and version match the tested build and installation passes smoke checks.

C:

This would verify include the appropriate install codeunit and verify its first-install behavior, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. The decisive local proof is the promoted package id and version match the tested build and installation passes smoke checks.

D:

This would verify implement an upgrade codeunit and rehearse migration on representative historical records, which addresses a different engineering need. It does not demonstrate that the current issue is resolved: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. The decisive local proof is the promoted package id and version match the tested build and installation passes smoke checks.

Question 160

A release engineer must move a tested finance extension into a managed deployment pipeline from source control. A targeted trial still reproduces the original gap after the team attempted this change: Build the AL project into an .app package and promote the tested artifact through the release process. Which repair directly addresses the remaining defect?

  1. Regenerate or correct translation units, remove hardcoded UI text, and ship matching XLF resources
  2. Add or correct the install hook and rerun fresh-install tests with clean tenant state
  3. Rebuild from the approved source revision and deploy that package rather than an untracked local copy
  4. Fix the upgrade codeunit's data conversion and validate the migration against a restored old-version dataset

Explanation

Correct Answer

C:

Rebuild from the approved source revision and deploy that package rather than an untracked local copy. This directly addresses the remaining defect for the requirement—A release engineer must move a tested finance extension into a managed deployment pipeline from source control. It restores the mechanism described here: al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

Incorrect Answers

A:

This correction is for the separate condition: A regional service team updates an AL UI app but German users still see hardcoded help strings. It would not directly restore the intended behavior in this situation: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. Here, rebuild from the approved source revision and deploy that package rather than an untracked local copy, because al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

B:

This correction is for the separate condition: A new tenant install requires initial setup records and default feature flags before users start work. It would not directly restore the intended behavior in this situation: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. Here, rebuild from the approved source revision and deploy that package rather than an untracked local copy, because al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.

D:

This correction is for the separate condition: An add-on introduces a revised subscription key and upgrading a populated tenant loses legacy mappings. It would not directly restore the intended behavior in this situation: A release engineer must move a tested finance extension into a managed deployment pipeline from source control. Here, rebuild from the approved source revision and deploy that package rather than an untracked local copy, because al packaging provides a deployable extension artifact decoupled from the developer's interactive editor session.


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