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MB-700 · Question #147

A company uses out-of-the-box functionality in Dynamics 365 Supply Chain Management. You identify a bug in the app. You perform a Lifecycle Services (LCS) issue search. The search results show the…

The correct answer is A. Download a hotfix for installation into the SYS layer. When a resolved bug is found via LCS issue search, the Microsoft-supported fix must be downloaded as a hotfix and applied to the SYS layer, which is the layer reserved for Microsoft's standard application code.

Architect solutions

Question

A company uses out-of-the-box functionality in Dynamics 365 Supply Chain Management. You identify a bug in the app. You perform a Lifecycle Services (LCS) issue search. The search results show the bug. The status of the bug is resolved. You need to implement the Microsoft-supported resolution into a development environment. What should you do?

Options

  • ADownload a hotfix for installation into the SYS layer.
  • BCopy code changes for manual insertion into the SYS layer.
  • CDownload a hotfix for installation into the VAR layer.
  • DCopy code changes for manual insertion into the VAR layer.

How the community answered

(50 responses)
  • A
    94% (47)
  • C
    2% (1)
  • D
    4% (2)

Why each option

When a resolved bug is found via LCS issue search, the Microsoft-supported fix must be downloaded as a hotfix and applied to the SYS layer, which is the layer reserved for Microsoft's standard application code.

ADownload a hotfix for installation into the SYS layer.Correct

Microsoft delivers resolved bugs as hotfix packages through LCS, and these packages are installed into the SYS layer - the layer owned by Microsoft for its standard application code. This is the only supported method that ensures the fix is applied correctly without creating unsupported customizations.

BCopy code changes for manual insertion into the SYS layer.

Manually copying code into the SYS layer is not a supported approach and would create an untracked, unsupported modification of Microsoft's base application code.

CDownload a hotfix for installation into the VAR layer.

The VAR layer is reserved for ISV (independent software vendor) code, not Microsoft hotfixes; Microsoft-issued fixes always target the SYS layer.

DCopy code changes for manual insertion into the VAR layer.

Manually copying code into the VAR layer is not a supported resolution method for Microsoft bugs and would result in an unsupported customization rather than a proper hotfix.

Concept tested: LCS hotfix deployment into SYS layer

Source: https://learn.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/migration-upgrade/download-hotfix-lcs

Topics

#Hotfixes#Application Layers#LCS#ALM

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