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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

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Microsoft MB-820 Practice Test 76

Question 750

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing solution architecture design during a source-control pull request (MB820-1.2-021). The observed development issue is that a marketplace publisher ships labels and captions only in English to customers requiring two languages. Which AL development or design response most directly addresses this issue?

  1. Add language translation files and validate translatable properties for the supported locales.
  2. Run the appropriate AppSourceCop and code analysis gates against the target runtime.
  3. Implement published tables, page extensions and event subscribers rather than distributing a modified base application.
  4. Use documented extension points and define integration precedence, supported events and compatibility tests.

Explanation

Correct Answer

A:

The most direct corrective response is to add language translation files and validate translatable properties for the supported locales. This addresses the specific failure where a marketplace publisher ships labels and captions only in English to customers requiring two languages. Acceptance evidence is that the same app displays approved captions under both configured client languages.

Incorrect Answers

B:

“Run the appropriate AppSourceCop and code analysis gates against the target runtime” concerns the separate step “run the appropriate AppSourceCop and code analysis gates against the target runtime”. The reported issue is that a marketplace publisher ships labels and captions only in English to customers requiring two languages, so the direct response is to add language translation files and validate translatable properties for the supported locales.

C:

“Implement published tables, page extensions and event subscribers rather than distributing a modified base application” concerns the alternative task “implement published tables, page extensions and event subscribers rather than distributing a modified base application”, but the stated failure is that a marketplace publisher ships labels and captions only in English to customers requiring two languages. The required measure is to add language translation files and validate translatable properties for the supported locales.

D:

The proposed “Use documented extension points and define integration precedence, supported events and compatibility tests” tests a different control: use documented extension points and define integration precedence, supported events and compatibility tests. The reported condition is that a marketplace publisher ships labels and captions only in English to customers requiring two languages; the more direct action is to add language translation files and validate translatable properties for the supported locales.

Question 751

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing solution architecture design during a source-control pull request (MB820-1.2-021). The observed development issue is that a marketplace publisher ships labels and captions only in English to customers requiring two languages. Which observed result would most clearly show the intended correction works?

  1. The combined installation completes without duplicate object ID errors.
  2. The same app displays approved captions under both configured client languages.
  3. The submitted artifact satisfies supported checks without requiring manual bypasses.
  4. The extension passes compatibility tests while the base application remains independently updatable.

Explanation

Correct Answer

B:

This is the outcome that directly verifies the intended correction: the same app displays approved captions under both configured client languages. The related solution is to add language translation files and validate translatable properties for the supported locales; it is based on the principle that localization is part of application packaging and usability.

Incorrect Answers

A:

“The combined installation completes without duplicate object ID errors” concerns the separate step “allocate supported object ID ranges and check unique app identity and object conflicts”. The reported issue is that a marketplace publisher ships labels and captions only in English to customers requiring two languages, so the direct response is to the same app displays approved captions under both configured client languages.

C:

The proposed “The submitted artifact satisfies supported checks without requiring manual bypasses” tests a different control: run the appropriate AppSourceCop and code analysis gates against the target runtime. The reported condition is that a marketplace publisher ships labels and captions only in English to customers requiring two languages; the more direct action is to the same app displays approved captions under both configured client languages.

D:

“The extension passes compatibility tests while the base application remains independently updatable” supports the separate task “implement published tables, page extensions and event subscribers rather than distributing a modified base application”, not the reported problem: a marketplace publisher ships labels and captions only in English to customers requiring two languages. This case instead calls for “The same app displays approved captions under both configured client languages”.

Question 752

At fictional Zincfield Sports, the Business Central development team is supporting equipment sales and replenishment and reviewing solution architecture design during a source-control pull request (MB820-1.2-021). The observed development issue is that a marketplace publisher ships labels and captions only in English to customers requiring two languages. Which recurring engineering check would best prevent this issue from returning?

  1. Require owner approval for destructive extension cleanup.
  2. Run translation coverage review before each AppSource release.
  3. Compare exported API surfaces at every version promotion.
  4. Check ID conflicts against declared installed dependencies.

Explanation

Correct Answer

B:

The ongoing check is to run translation coverage review before each AppSource release. This helps detect recurrence when a marketplace publisher ships labels and captions only in English to customers requiring two languages. The associated correction is to add language translation files and validate translatable properties for the supported locales; a confirming result is that the same app displays approved captions under both configured client languages.

Incorrect Answers

A:

“Require owner approval for destructive extension cleanup” concerns the alternative task “document supported uninstall and delete-data behavior, preserve data as required and use deliberate cleanup procedures”, but the stated failure is that a marketplace publisher ships labels and captions only in English to customers requiring two languages. The required measure is to run translation coverage review before each AppSource release.

C:

“Compare exported API surfaces at every version promotion” supports the separate task “version public interfaces compatibly and review downstream dependency contracts before a breaking change”, not the reported problem: a marketplace publisher ships labels and captions only in English to customers requiring two languages. This case instead calls for “Run translation coverage review before each AppSource release”.

D:

“Check ID conflicts against declared installed dependencies” concerns the separate step “allocate supported object ID ranges and check unique app identity and object conflicts”. The reported issue is that a marketplace publisher ships labels and captions only in English to customers requiring two languages, so the direct response is to run translation coverage review before each AppSource release.

Question 753

At fictional Upland Facilities, the Business Central development team is supporting service dispatch and support and reviewing external-service integration during a sandbox design review (MB820-6.2-194). The observed development issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension. Which recurring engineering check would best prevent this issue from returning?

  1. Test duplicate submission and late response scenarios.
  2. Run negative authorization tests against API endpoints.
  3. Audit API field lists and permission behavior after schema changes.
  4. Check supported API object capabilities before planning extensions.

Explanation

Correct Answer

D:

The ongoing check is to check supported API object capabilities before planning extensions. This helps detect recurrence when an existing API page needs a new response field but a developer expects to extend it with pageextension. The associated correction is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available; a confirming result is that the consumer sees a documented field in the supported API version.

Incorrect Answers

A:

The proposed “Test duplicate submission and late response scenarios” tests a different control: define idempotency and stable external reference handling in the API-backed business process. The reported condition is that an existing API page needs a new response field but a developer expects to extend it with pageextension; the more direct action is to check supported API object capabilities before planning extensions.

B:

“Run negative authorization tests against API endpoints” supports the separate task “expose only approved actions and enforce permissions and validation at the service boundary”, not the reported problem: an existing API page needs a new response field but a developer expects to extend it with pageextension. This case instead calls for “Check supported API object capabilities before planning extensions”.

C:

“Audit API field lists and permission behavior after schema changes” concerns the separate step “expose only the minimal approved fields and apply entitlement and permission rules”. The reported issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension, so the direct response is to check supported API object capabilities before planning extensions.

Question 754

At fictional Upland Facilities, the Business Central development team is supporting service dispatch and support and reviewing external-service integration during a sandbox design review (MB820-6.2-194). The observed development issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension. Which Business Central or AL development principle best explains the right response?

  1. Reliable APIs must account for retries and ambiguous response outcomes.
  2. API pages are service-oriented object contracts distinct from interactive UI pages.
  3. Business Central API extensibility has object-type boundaries.
  4. Business operations often require action endpoints, not raw field mutation.

Explanation

Correct Answer

C:

The governing principle is that business Central API extensibility has object-type boundaries. The engineering response is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available. Verification should show that the consumer sees a documented field in the supported API version.

Incorrect Answers

A:

“Reliable APIs must account for retries and ambiguous response outcomes” supports the separate task “define idempotency and stable external reference handling in the API-backed business process”, not the reported problem: an existing API page needs a new response field but a developer expects to extend it with pageextension. This case instead calls for “publish a compatible new API contract or supported API page design rather than assuming API page extension is available”.

B:

“API pages are service-oriented object contracts distinct from interactive UI pages” concerns the separate step “create an appropriately configured API page with stable entity name, entity set, publisher and version properties”. The reported issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension, so the direct response is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available.

D:

The proposed “Business operations often require action endpoints, not raw field mutation” tests a different control: implement or expose an appropriate supported bound/unbound action that invokes validated posting logic. The reported condition is that an existing API page needs a new response field but a developer expects to extend it with pageextension; the more direct action is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available.

Question 755

At fictional Upland Facilities, the Business Central development team is supporting service dispatch and support and reviewing external-service integration during a sandbox design review (MB820-6.2-194). The observed development issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension. Which observed result would most clearly show the intended correction works?

  1. Existing integrations keep working until consumers opt into the new version.
  2. The API payload omits protected fields for unauthorized consumers.
  3. The consumer can retrieve the authorized parent and its related lines consistently.
  4. The consumer sees a documented field in the supported API version.

Explanation

Correct Answer

D:

This is the outcome that directly verifies the intended correction: the consumer sees a documented field in the supported API version. The related solution is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available; it is based on the principle that business Central API extensibility has object-type boundaries.

Incorrect Answers

A:

“Existing integrations keep working until consumers opt into the new version” concerns the separate step “preserve compatible contracts or introduce a deliberate versioned API and migration path”. The reported issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension, so the direct response is to the consumer sees a documented field in the supported API version.

B:

“The API payload omits protected fields for unauthorized consumers” concerns the alternative task “expose only the minimal approved fields and apply entitlement and permission rules”, but the stated failure is that an existing API page needs a new response field but a developer expects to extend it with pageextension. The required measure is to the consumer sees a documented field in the supported API version.

C:

The proposed “The consumer can retrieve the authorized parent and its related lines consistently” tests a different control: design appropriate API page parts or supported related entity navigation with stable keys. The reported condition is that an existing API page needs a new response field but a developer expects to extend it with pageextension; the more direct action is to the consumer sees a documented field in the supported API version.

Question 756

At fictional Upland Facilities, the Business Central development team is supporting service dispatch and support and reviewing external-service integration during a sandbox design review (MB820-6.2-194). The observed development issue is that an existing API page needs a new response field but a developer expects to extend it with pageextension. Which AL development or design response most directly addresses this issue?

  1. Define idempotency and stable external reference handling in the API-backed business process.
  2. Expose only approved actions and enforce permissions and validation at the service boundary.
  3. Preserve compatible contracts or introduce a deliberate versioned API and migration path.
  4. Publish a compatible new API contract or supported API page design rather than assuming API page extension is available.

Explanation

Correct Answer

D:

The most direct corrective response is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available. This addresses the specific failure where an existing API page needs a new response field but a developer expects to extend it with pageextension. Acceptance evidence is that the consumer sees a documented field in the supported API version.

Incorrect Answers

A:

“Define idempotency and stable external reference handling in the API-backed business process” concerns the alternative task “define idempotency and stable external reference handling in the API-backed business process”, but the stated failure is that an existing API page needs a new response field but a developer expects to extend it with pageextension. The required measure is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available.

B:

The proposed “Expose only approved actions and enforce permissions and validation at the service boundary” tests a different control: expose only approved actions and enforce permissions and validation at the service boundary. The reported condition is that an existing API page needs a new response field but a developer expects to extend it with pageextension; the more direct action is to publish a compatible new API contract or supported API page design rather than assuming API page extension is available.

C:

“Preserve compatible contracts or introduce a deliberate versioned API and migration path” supports the separate task “preserve compatible contracts or introduce a deliberate versioned API and migration path”, not the reported problem: an existing API page needs a new response field but a developer expects to extend it with pageextension. This case instead calls for “publish a compatible new API contract or supported API page design rather than assuming API page extension is available”.

Question 757

At fictional Granite Telecom, the Business Central development team is supporting field equipment billing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. Which recurring engineering check would best prevent this issue from returning?

  1. Reconcile exported row counts with source document totals.
  2. Audit file-export field inventories after schema changes.
  3. Run negative-file tests before scheduled partner uploads.
  4. Maintain mapping fixtures for changed partner specifications.

Explanation

Correct Answer

B:

The ongoing check is to audit file-export field inventories after schema changes. This helps detect recurrence when an XMLport export leaks fields that are not part of the approved customer-facing contract. The associated correction is to remove unneeded nodes and enforce permissions before streaming records; a confirming result is that the exported file contains only authorized, contractually required fields. Applied here, the relevant facts are: maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The question asks which recurring engineering check would best prevent this issue from returning.

Incorrect Answers

A:

The proposed “Reconcile exported row counts with source document totals” tests a different control: model the related table elements and record linkage within the XMLport. The reported condition is that an XMLport export leaks fields that are not part of the approved customer-facing contract; the more direct action is to audit file-export field inventories after schema changes.

C:

“Run negative-file tests before scheduled partner uploads” concerns the separate step “add validation and explicit error handling at the XMLport import boundary”. The reported issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract, so the direct response is to audit file-export field inventories after schema changes.

D:

“Maintain mapping fixtures for changed partner specifications” concerns the alternative task “review field mapping and conversion logic against the partner schema”, but the stated failure is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The required measure is to audit file-export field inventories after schema changes.

Question 758

At fictional Granite Telecom, the Business Central development team is supporting field equipment billing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. Which observed result would most clearly show the intended correction works?

  1. Test feeds retain identifiers and preserve expected field meanings.
  2. Each exported header includes its correct set of line records.
  3. Malformed records are rejected with traceable diagnostics and no partial incorrect state.
  4. The exported file contains only authorized, contractually required fields.

Explanation

Correct Answer

D:

This is the outcome that directly verifies the intended correction: the exported file contains only authorized, contractually required fields. The related solution is to remove unneeded nodes and enforce permissions before streaming records; it is based on the principle that serialization schemas and authorization jointly determine data exposure. Applied here, the relevant facts are: maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The question asks which observed result would most clearly show the intended correction works.

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: an XMLport export leaks fields that are not part of the approved customer-facing contract. This case instead calls for “The exported file contains only authorized, contractually required fields”.

B:

“Each exported header includes its correct set of line records” concerns the separate step “model the related table elements and record linkage within the XMLport”. The reported issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract, so the direct response is to the exported file contains only authorized, contractually required fields.

C:

“Malformed records are rejected with traceable diagnostics and no partial incorrect state” concerns the alternative task “add validation and explicit error handling at the XMLport import boundary”, but the stated failure is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The required measure is to the exported file contains only authorized, contractually required fields.

Question 759

At fictional Granite Telecom, the Business Central development team is supporting field equipment billing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. Which Business Central or AL development principle best explains the right response?

  1. Serialization schemas and authorization jointly determine data exposure.
  2. Automated imports require headless, stream-friendly interfaces.
  3. External file schemas are versioned integration interfaces.
  4. Bulk data operations require predictable failure semantics.

Explanation

Correct Answer

A:

The governing principle is that serialization schemas and authorization jointly determine data exposure. The engineering response is to remove unneeded nodes and enforce permissions before streaming records. Verification should show that the exported file contains only authorized, contractually required fields. Applied here, the relevant facts are: maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The question asks which Business Central or AL development principle best explains the right response.

Incorrect Answers

B:

“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 an XMLport export leaks fields that are not part of the approved customer-facing contract. The required measure is to remove unneeded nodes and enforce permissions before streaming records.

C:

The proposed “External file schemas are versioned integration interfaces” tests a different control: version and validate the XMLport node contract before deployment. The reported condition is that an XMLport export leaks fields that are not part of the approved customer-facing contract; the more direct action is to remove unneeded nodes and enforce permissions before streaming records.

D:

“Bulk data operations require predictable failure semantics” supports the separate task “design an appropriate transactional import/error strategy and reconcile accepted versus rejected records”, not the reported problem: an XMLport export leaks fields that are not part of the approved customer-facing contract. This case instead calls for “remove unneeded nodes and enforce permissions before streaming records”.

Question 760

At fictional Granite Telecom, the Business Central development team is supporting field equipment billing and reviewing object model and application extensibility during an extension maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. Which AL development or design response most directly addresses this issue?

  1. Add validation and explicit error handling at the XMLport import boundary.
  2. Normalize supported date parsing with an explicit agreed format and reject ambiguous values.
  3. Remove unneeded nodes and enforce permissions before streaming records.
  4. Define an XMLport schema with the intended parent/child nodes and matching element names.

Explanation

Correct Answer

C:

The most direct corrective response is to remove unneeded nodes and enforce permissions before streaming records. This addresses the specific failure where an XMLport export leaks fields that are not part of the approved customer-facing contract. Acceptance evidence is that the exported file contains only authorized, contractually required fields. Applied here, the relevant facts are: maintenance sprint (MB820-3.3-090). The observed development issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The question asks which AL development or design response most directly addresses this issue.

Incorrect Answers

A:

“Add validation and explicit error handling at the XMLport import boundary” concerns the alternative task “add validation and explicit error handling at the XMLport import boundary”, but the stated failure is that an XMLport export leaks fields that are not part of the approved customer-facing contract. The required measure is to remove unneeded nodes and enforce permissions before streaming records.

B:

The proposed “Normalize supported date parsing with an explicit agreed format and reject ambiguous values” tests a different control: normalize supported date parsing with an explicit agreed format and reject ambiguous values. The reported condition is that an XMLport export leaks fields that are not part of the approved customer-facing contract; the more direct action is to remove unneeded nodes and enforce permissions before streaming records.

D:

“Define an XMLport schema with the intended parent/child nodes and matching element names” concerns the separate step “define an XMLport schema with the intended parent/child nodes and matching element names”. The reported issue is that an XMLport export leaks fields that are not part of the approved customer-facing contract, so the direct response is to remove unneeded nodes and enforce permissions before streaming records.