kumar_chirangv

 Profile Answers by kumar_chirangv 

• Dec 5th, 2007

 

Firstly, a Development Class is just like a package, which holds a group of objects together.
Transport Layer just specifies the route through which these Development Class's objects has to move to the Consolidation system from Integration system.

Hardik Jasani

• Feb 16th, 2013

 

Transport Layer in ABAP Workbench

The Change and Transport System supports the distribution of development work on large projects across multiple SAP Systems.

The packages in each development system are grouped into one transport layer.

The transport layer determines whether objects are assigned to a local or transportable change request.

Use
Each of your SAP development systems is assigned a transport layer as its standard transport layer. If you use Extended Transport Control, you can assign different standard transport layers to certain clients.

You can define at the most one consolidation target for each SAP System and transport layer.

When you create a package, it is assigned the standard transport layer of the SAP System.

If you want to assign a different transport layer to a package, you require the administration authorization for the Change and Transport System.

The objects in a package automatically have the transport attributes defined for the corresponding transport layer.

If a consolidation route originating in their SAP System is defined, then the objects are assigned to a transportable request, and transported into the consolidation target when it is released.

If a consolidation route is not defined, the objects are assigned to a local request, and are not transported.

Customizing settings are not assigned to a package. They have the transport attributes of the standard transport layer of the system or client.

It is best to assign a package a standard transport layer for which a consolidation route originating in the development system is defined.

To display and maintain the transport layers and routes, use the Transport Management System (transaction STMS).

Only the system adminstrator can make changes.

Caution:
The tables TSYST, DEVL, TWSYS, TASYS are no longer productive as of Release 4.0A and cannot be maintained.

Consolidation route
Consolidation routes are used to define the targets of change requests.

Each consolidation route must be assigned a transport layer. There can be only one consolidation target for each source system and transport layer.

Source client in a delivery relationship
If a source client is specified in the definition of a delivery route, transports are only forwarded according to this route if they are imported into the specified client of the SAP system.

Delivery routes without source client are valid for all imports into an SAP system, independent of which client the requests are imported into

Note:
Automatic delivery is only active for transportable change requests and Customizing requests.