The following table describes the application object layers in Microsoft Dynamics AX:
Layer
|
Description
|
USR
|
The user layer is for user modifications, such as reports.
|
CUS
|
The customer layer is for modifications that are specific to a company.
|
VAR
|
Value Added Resellers (VAR) can make modifications or new developments to the VAR layer as specified by the customers or as a strategy of creating an industry specific solution.
|
ISV
|
When an Independent Software Vendor (ISV) creates their own solution, their modifications are saved in the ISV layer.
|
SLN
|
The solution layer is used by distributors to implement vertical partner solutions.
|
FPK
|
The FPK layer is an application object patch layer reserved by Microsoft for future patching or other updates. For more information, see Patch Layers.
|
GLS
|
When the application is modified to match country or region specific legal demands, these modifications are saved in the GLS layer.
|
SYS
|
The standard application is implemented at the lowest level, the SYS layer. The application objects in the standard application can never be deleted.
|
Each layer has a corresponding patch layer that can be used to incorporate updates to your application or to store conflicts when you import models into a layer. For more information about patch layers