2、config.  SLD，enter   System Landscape Directory

     2.0 Products:       create product,

   2.1 Software Components：create Software Components

   2.2 Technical System：create tech .system and assign Software Components done above

   2.3 Business System: create Business system according to Tech. system.
3、Integration Repository

   3.0 Import Software components from SLD

   3.1 create DataType

   3.2 create  MessageType

   3.3 create  MessageInterface

   3.4 create  MessageMapping

   3.5 create  Interface Mapping

4、Integration Directory

   If  there'is  Scenario in IR ,Transfer integaration scenarion  from IR.

   4.0 create Party ,apply to the system with many interfaces or sub-systems.usually needn't do this step for common dev.
   4.1 Assign business system

     4.2 create Business Service

   4.3 config. Communication Channel

   4.4 config. Receiver Determination

   4.5 config.  Interface Determination

   4.6 config.  Sender Agreement    ：it's not necessary for IDOC 
   4.7  config. Receiver Agreement

refere  to ：http://blog.csdn.net/heicm/archive/2009/09/07/45226421.aspx