McAfee Secure

Microsoft MB-820 Bundle

Exam Code: MB-820

Exam Name Microsoft Dynamics 365 Business Central Developer

Certification Provider: Microsoft

Corresponding Certification: Microsoft Certified: Dynamics 365 Business Central Developer Associate

Microsoft MB-820 Bundle $19.99

100% Microsoft MB-820 Guaranteed Success With Testking Training Materials

Get Real MB-820 Exam Questions & Expert Verified Answers as Experienced on the Real Exam!

  • Questions & Answers

    MB-820 Questions & Answers

    131 Questions & Answers

    The ultimate exam preparation tool, Questions & Answers mirrors the actual MB-820 exam while allowing you to hone and measure every aspect of your test-taking ability.

  • Study Guide

    MB-820 Study Guide

    948 PDF Pages

    Developed by industry experts, this 948-page guide spells out in painstaking detail all of the information you need to ace MB-820 exam.

Microsoft Dynamics 365 Business Central Developer (MB-820) Practice Tests

Satisfaction Guaranteed

Money Back Guarantee

Testking provides hassle-free money back guarantee with our products. That is because we have 100% trust in the abilities of our professional and experience product team, and our record is a proof of that.

99.6% PASS RATE
Total Cost: $154.98
Bundle Price: $134.99

Purchase Individually

  • Questions & Answers

    Questions & Answers

    131 Questions

    $124.99
  • Study Guide

    Study Guide

    948 PDF Pages

    $29.99

Microsoft MB-820 Practice Test 35

Question 340

At fictional Riverside Consulting, the Business Central development team is supporting professional project billing and reviewing automated testing and diagnostics during an AL developer handoff (MB820-5.1-162). The observed development issue is that an app upgrade contains a data migration but regression tests only cover fresh installs. Which Business Central or AL development principle best explains the right response?

  1. Testing infrastructure is valuable only when it gates delivery.
  2. Regression testing needs executable assertions, not only manual exploration.
  3. Report tests should verify content, not merely execution.
  4. Upgrade testing differs from clean-install testing.

Explanation

Correct Answer

D:

The governing principle is that upgrade testing differs from clean-install testing. The engineering response is to seed an older app version with representative data then test upgrade preservation. Verification should show that historical records remain correct across the version change.

Incorrect Answers

A:

“Testing infrastructure is valuable only when it gates delivery” concerns the alternative task “configure and execute supported Business Central tests in the Test Toolkit or automated test runner”, but the stated failure is that an app upgrade contains a data migration but regression tests only cover fresh installs. The required measure is to seed an older app version with representative data then test upgrade preservation.

B:

The proposed “Regression testing needs executable assertions, not only manual exploration” tests a different control: create AL test codeunits with [Test] procedures covering success and rejection branches. The reported condition is that an app upgrade contains a data migration but regression tests only cover fresh installs; the more direct action is to seed an older app version with representative data then test upgrade preservation.

C:

“Report tests should verify content, not merely execution” supports the separate task “assert expected dataset values or generated output with representative fixtures”, not the reported problem: an app upgrade contains a data migration but regression tests only cover fresh installs. This case instead calls for “seed an older app version with representative data then test upgrade preservation”.

Question 341

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-081). The observed development issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. Which Business Central or AL development principle best explains the right response?

  1. Schema-level equivalence matters more than superficially successful imports.
  2. External file schemas are versioned integration interfaces.
  3. Structured imports and exports must preserve parent/child relationships.
  4. Automated imports require headless, stream-friendly interfaces.

Explanation

Correct Answer

C:

The governing principle is that structured imports and exports must preserve parent/child relationships. The engineering response is to model the related table elements and record linkage within the XMLport. Verification should show that each exported header includes its correct set of line records.

Incorrect Answers

A:

The proposed “Schema-level equivalence matters more than superficially successful imports” tests a different control: review field mapping and conversion logic against the partner schema. The reported condition is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header; the more direct action is to model the related table elements and record linkage within the XMLport.

B:

“External file schemas are versioned integration interfaces” supports the separate task “version and validate the XMLport node contract before deployment”, not the reported problem: a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. This case instead calls for “model the related table elements and record linkage within the XMLport”.

D:

“Automated imports require headless, stream-friendly interfaces” concerns the alternative task “use supported XMLport run/save/load or stream mechanisms appropriate to automation”, but the stated failure is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. The required measure is to model the related table elements and record linkage within the XMLport.

Question 342

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-081). The observed development issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. Which observed result would most clearly show the intended correction works?

  1. Test feeds retain identifiers and preserve expected field meanings.
  2. Malformed records are rejected with traceable diagnostics and no partial incorrect state.
  3. Dates from the accepted format are stored correctly regardless of client locale.
  4. Each exported header includes its correct set of line records.

Explanation

Correct Answer

D:

This is the outcome that directly verifies the intended correction: each exported header includes its correct set of line records. The related solution is to model the related table elements and record linkage within the XMLport; it is based on the principle that structured imports and exports must preserve parent/child relationships.

Incorrect Answers

A:

“Test feeds retain identifiers and preserve expected field meanings” supports the separate task “review field mapping and conversion logic against the partner schema”, not the reported problem: a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. This case instead calls for “Each exported header includes its correct set of line records”.

B:

“Malformed records are rejected with traceable diagnostics and no partial incorrect state” concerns the separate step “add validation and explicit error handling at the XMLport import boundary”. The reported issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header, so the direct response is to each exported header includes its correct set of line records.

C:

“Dates from the accepted format are stored correctly regardless of client locale” concerns the alternative task “normalize supported date parsing with an explicit agreed format and reject ambiguous values”, but the stated failure is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. The required measure is to each exported header includes its correct set of line records.

Question 343

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-081). The observed development issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. Which recurring engineering check would best prevent this issue from returning?

  1. Maintain mapping fixtures for changed partner specifications.
  2. Run contract tests for every EDI partner change.
  3. Reconcile exported row counts with source document totals.
  4. Validate exported XML against agreed sample schemas.

Explanation

Correct Answer

C:

The ongoing check is to reconcile exported row counts with source document totals. This helps detect recurrence when a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. The associated correction is to model the related table elements and record linkage within the XMLport; a confirming result is that each exported header includes its correct set of line records.

Incorrect Answers

A:

“Maintain mapping fixtures for changed partner specifications” concerns the separate step “review field mapping and conversion logic against the partner schema”. The reported issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header, so the direct response is to reconcile exported row counts with source document totals.

B:

“Run contract tests for every EDI partner change” concerns the alternative task “version and validate the XMLport node contract before deployment”, but the stated failure is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. The required measure is to reconcile exported row counts with source document totals.

D:

“Validate exported XML against agreed sample schemas” supports the separate task “define an XMLport schema with the intended parent/child nodes and matching element names”, not the reported problem: a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. This case instead calls for “Reconcile exported row counts with source document totals”.

Question 344

At fictional Alder Distribution, the Business Central development team is supporting wholesale order fulfillment and reviewing object model and application extensibility during a troubleshooting exercise (MB820-3.3-081). The observed development issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. Which AL development or design response most directly addresses this issue?

  1. Normalize supported date parsing with an explicit agreed format and reject ambiguous values.
  2. Remove unneeded nodes and enforce permissions before streaming records.
  3. Model the related table elements and record linkage within the XMLport.
  4. Use supported XMLport run/save/load or stream mechanisms appropriate to automation.

Explanation

Correct Answer

C:

The most direct corrective response is to model the related table elements and record linkage within the XMLport. This addresses the specific failure where a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. Acceptance evidence is that each exported header includes its correct set of line records.

Incorrect Answers

A:

“Normalize supported date parsing with an explicit agreed format and reject ambiguous values” concerns the alternative task “normalize supported date parsing with an explicit agreed format and reject ambiguous values”, but the stated failure is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header. The required measure is to model the related table elements and record linkage within the XMLport.

B:

The proposed “Remove unneeded nodes and enforce permissions before streaming records” tests a different control: remove unneeded nodes and enforce permissions before streaming records. The reported condition is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header; the more direct action is to model the related table elements and record linkage within the XMLport.

D:

“Use supported XMLport run/save/load or stream mechanisms appropriate to automation” concerns the separate step “use supported XMLport run/save/load or stream mechanisms appropriate to automation”. The reported issue is that a logistics provider expects one row per shipment line but the XMLport exports only the shipment header, so the direct response is to model the related table elements and record linkage within the XMLport.

Question 345

At fictional Beacon Manufacturing, the Business Central development team is supporting production planning and invoicing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-050). The observed development issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. Which Business Central or AL development principle best explains the right response?

  1. Page action extensibility should preserve users' established workflow.
  2. Calculated fields derive values from data rather than storing independent copies.
  3. Extensible enums permit declared values across compatible app boundaries.
  4. Page extensions enhance specific UI surfaces and must consider visibility controls.

Explanation

Correct Answer

A:

The governing principle is that page action extensibility should preserve users' established workflow. The engineering response is to use pageextension action modifications at a suitable existing placement. Verification should show that the approved action appears in Sales Order and existing navigation remains intact.

Incorrect Answers

B:

“Calculated fields derive values from data rather than storing independent copies” supports the separate task “define an appropriate FlowField with a CalcFormula and use CalcFields where required”, not the reported problem: a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. This case instead calls for “use pageextension action modifications at a suitable existing placement”.

C:

“Extensible enums permit declared values across compatible app boundaries” concerns the separate step “use a supported extensible enum or enumextension where the target model allows extension”. The reported issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead, so the direct response is to use pageextension action modifications at a suitable existing placement.

D:

“Page extensions enhance specific UI surfaces and must consider visibility controls” concerns the alternative task “add the field in the appropriate pageextension layout section and verify ApplicationArea and permissions”, but the stated failure is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. The required measure is to use pageextension action modifications at a suitable existing placement.

Question 346

At fictional Beacon Manufacturing, the Business Central development team is supporting production planning and invoicing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-050). The observed development issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. Which observed result would most clearly show the intended correction works?

  1. The UI supports header navigation and related line entry using the intended structure.
  2. The standard Customer table remains intact and the field is visible after extension installation.
  3. New records accept controlled category values without arbitrary unsupported strings.
  4. The approved action appears in Sales Order and existing navigation remains intact.

Explanation

Correct Answer

D:

This is the outcome that directly verifies the intended correction: the approved action appears in Sales Order and existing navigation remains intact. The related solution is to use pageextension action modifications at a suitable existing placement; it is based on the principle that page action extensibility should preserve users' established workflow.

Incorrect Answers

A:

“The UI supports header navigation and related line entry using the intended structure” supports the separate task “select the proper Document page pattern and related subpage for line data”, not the reported problem: a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. This case instead calls for “The approved action appears in Sales Order and existing navigation remains intact”.

B:

“The standard Customer table remains intact and the field is visible after extension installation” concerns the separate step “create a tableextension to add the field and a pageextension to surface it on the customer page”. The reported issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead, so the direct response is to the approved action appears in Sales Order and existing navigation remains intact.

C:

“New records accept controlled category values without arbitrary unsupported strings” concerns the alternative task “model categories with a supported enum or related lookup table appropriate to extensibility requirements”, but the stated failure is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. The required measure is to the approved action appears in Sales Order and existing navigation remains intact.

Question 347

At fictional Beacon Manufacturing, the Business Central development team is supporting production planning and invoicing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-050). The observed development issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. Which AL development or design response most directly addresses this issue?

  1. Use pageextension action modifications at a suitable existing placement.
  2. Add the field in the appropriate pageextension layout section and verify ApplicationArea and permissions.
  3. Define an appropriate FlowField with a CalcFormula and use CalcFields where required.
  4. Separate list/read-only presentation from interactive document editing pages using supported page types.

Explanation

Correct Answer

A:

The most direct corrective response is to use pageextension action modifications at a suitable existing placement. This addresses the specific failure where a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. Acceptance evidence is that the approved action appears in Sales Order and existing navigation remains intact.

Incorrect Answers

B:

“Add the field in the appropriate pageextension layout section and verify ApplicationArea and permissions” concerns the alternative task “add the field in the appropriate pageextension layout section and verify ApplicationArea and permissions”, but the stated failure is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. The required measure is to use pageextension action modifications at a suitable existing placement.

C:

The proposed “Define an appropriate FlowField with a CalcFormula and use CalcFields where required” tests a different control: define an appropriate FlowField with a CalcFormula and use CalcFields where required. The reported condition is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead; the more direct action is to use pageextension action modifications at a suitable existing placement.

D:

“Separate list/read-only presentation from interactive document editing pages using supported page types” supports the separate task “separate list/read-only presentation from interactive document editing pages using supported page types”, not the reported problem: a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. This case instead calls for “use pageextension action modifications at a suitable existing placement”.

Question 348

At fictional Beacon Manufacturing, the Business Central development team is supporting production planning and invoicing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.1-050). The observed development issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. Which recurring engineering check would best prevent this issue from returning?

  1. Validate standard document layout behavior in acceptance tests.
  2. Review allowed values when business taxonomy changes.
  3. Regression-test existing page actions after extension merge.
  4. Audit actions exposed through nonediting views.

Explanation

Correct Answer

C:

The ongoing check is to regression-test existing page actions after extension merge. This helps detect recurrence when a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. The associated correction is to use pageextension action modifications at a suitable existing placement; a confirming result is that the approved action appears in Sales Order and existing navigation remains intact.

Incorrect Answers

A:

“Validate standard document layout behavior in acceptance tests” concerns the alternative task “select the proper Document page pattern and related subpage for line data”, but the stated failure is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead. The required measure is to regression-test existing page actions after extension merge.

B:

The proposed “Review allowed values when business taxonomy changes” tests a different control: model categories with a supported enum or related lookup table appropriate to extensibility requirements. The reported condition is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead; the more direct action is to regression-test existing page actions after extension merge.

D:

“Audit actions exposed through nonediting views” concerns the separate step “separate list/read-only presentation from interactive document editing pages using supported page types”. The reported issue is that a developer needs to extend the Sales Order action bar but creates a new unrelated page instead, so the direct response is to regression-test existing page actions after extension merge.

Question 349

At fictional Brookstone Labs, the Business Central development team is supporting research procurement and reviewing AL business logic and user experience during a source-control pull request (MB820-4.2-140). The observed development issue is that an inventory customization ignores data validation and inserts records with impossible item units. Which observed result would most clearly show the intended correction works?

  1. The adjustment is traceable through supported correction records without rewriting posted history.
  2. Repeated imports identify existing vendors rather than multiplying records.
  3. Invalid unit combinations are rejected while valid items are accepted.
  4. Document numbers remain unique and traceable across posting operations.

Explanation

Correct Answer

C:

This is the outcome that directly verifies the intended correction: invalid unit combinations are rejected while valid items are accepted. The related solution is to use standard field validation and business rule entry points before database writes; it is based on the principle that data process models rely on consistent validation across transaction paths.

Incorrect Answers

A:

The proposed “The adjustment is traceable through supported correction records without rewriting posted history” tests a different control: follow the documented posting and corrective-document patterns instead of editing immutable history. The reported condition is that an inventory customization ignores data validation and inserts records with impossible item units; the more direct action is to invalid unit combinations are rejected while valid items are accepted.

B:

“Repeated imports identify existing vendors rather than multiplying records” supports the separate task “use stable vendor identifiers and defined match/merge rules for master data”, not the reported problem: an inventory customization ignores data validation and inserts records with impossible item units. This case instead calls for “Invalid unit combinations are rejected while valid items are accepted”.

D:

“Document numbers remain unique and traceable across posting operations” concerns the alternative task “use supported numbering and posting design patterns for document identifiers”, but the stated failure is that an inventory customization ignores data validation and inserts records with impossible item units. The required measure is to invalid unit combinations are rejected while valid items are accepted.

Question 350

At fictional Brookstone Labs, the Business Central development team is supporting research procurement and reviewing AL business logic and user experience during a source-control pull request (MB820-4.2-140). The observed development issue is that an inventory customization ignores data validation and inserts records with impossible item units. Which AL development or design response most directly addresses this issue?

  1. Represent repeating related records with an appropriate child table and explicit relationship.
  2. Follow the documented posting and corrective-document patterns instead of editing immutable history.
  3. Use document header and line table patterns with proper linked records.
  4. Use standard field validation and business rule entry points before database writes.

Explanation

Correct Answer

D:

The most direct corrective response is to use standard field validation and business rule entry points before database writes. This addresses the specific failure where an inventory customization ignores data validation and inserts records with impossible item units. Acceptance evidence is that invalid unit combinations are rejected while valid items are accepted.

Incorrect Answers

A:

“Represent repeating related records with an appropriate child table and explicit relationship” supports the separate task “represent repeating related records with an appropriate child table and explicit relationship”, not the reported problem: an inventory customization ignores data validation and inserts records with impossible item units. This case instead calls for “use standard field validation and business rule entry points before database writes”.

B:

“Follow the documented posting and corrective-document patterns instead of editing immutable history” concerns the separate step “follow the documented posting and corrective-document patterns instead of editing immutable history”. The reported issue is that an inventory customization ignores data validation and inserts records with impossible item units, so the direct response is to use standard field validation and business rule entry points before database writes.

C:

“Use document header and line table patterns with proper linked records” concerns the alternative task “use document header and line table patterns with proper linked records”, but the stated failure is that an inventory customization ignores data validation and inserts records with impossible item units. The required measure is to use standard field validation and business rule entry points before database writes.