Hi Mustafa,
I suggest, you should understand the scenario first and try to create the master data on your own. You may follow this link:
Assembly Processing with SAP PS - Product Lifecycle Management - SCN Wiki
Answer to Question 1:
- You should check in table MARC for STRGR (Strategy) to be 80. All these materials are created for Assembly processing.
Answer to Question 2:
- In CJ93 (Std. Project), you should check if "SD/PS assignment" is checked.
- If so, then manually check if this Project is assigned to any Standard Network in CN03.
Hope this helps.