Maintaining the Standard Network 
Use
In assembly processing in the Project System, you use a standard network as a template to generate a network when you create a sales document item for the relevant material.
Procedure
For information about standard networks and how to maintain them, refer to
Standard Networks.For information about how to allocate material components to standard networks, refer to
Allocating Material Components to Standard Network.You do not have to make any specific settings for assembly processing in the standard network. However if you want to create a work breakdown structure during assembly processing, you have to assign the standard network to a standard work breakdown structure. You do this in the header of the standard network. You can also assign individual activities to standard WBS elements.
Assigning Standard Network Headers to Standard WBS Elements
Assigning Standard Network Activities to Standard WBS Elements
You can do also do this on the individual activity detail screens.
You can decide in the standard WBS whether the system creates on structure for each item or one structure for the whole sales document. For more information, see
Creating one WBS for Each Sales Document ItemNumbers for Standard WBS
Since the system determines the number of the WBS from the sales document, the standard WBS number should be longer than 10 characters, unless you are using editing masks, which we recommend.
For more details, refer to
Determining Project Numbers from Sales Documents