Layers and Models

 

Layers

We have 8 layers in dynamics, a layer system is used to manage objects. The USR layer is the top layer and the SYS layer is the bottom layer, and each layer has a corresponding patch layer above it.

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.

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.

Patch Layers: Each layer in Microsoft Dynamics AX 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.

Models

Microsoft Dynamics 365 Finance & Operations needs package, model and project to start development or customization

• Run visual studio as Administrator
• Go to the Dynamics 365 > Model Management > Create model
• Fill the Add parameters form > click Next 
• Select Create New Package > click Next 
  Create new package will create a new and separate package. The model will be created in the newly created package. It is the extension approach of development.
  Select existing package will give you option to select the existing package from list in which you want to create the model. It is the overlayering approach of development.

·       Select packages you want to add in your model as reference. 

• In your model, you have to add the references of all the packages you are going to develop using extension approach.

·       Select packages you want to add in your model as reference. 

• Tick create new project option if you want to create project in newly created model.
• Tick the make this my default model for new projects option if you want to add every new project in this model by default.

Click Finish.