You can make the default settings required to create a network from a sales order in the menu options Basic data -> Standard structures -> Parm. SalesOrd->Ntwk (Parameters for sales order -> network).
If you do not enter data here, you can also enter the necessary data online directly in the sales order.
The data in the material master actually controls whether a network can be created from a sales order item. To set this up, you should enter the core information like (assembly type, order type (i.e. network or order type) configuration, account assignment category) in the requirements class for the material. The requirements class is determined by the strategy group (see above) which was maintained in the material master.
Therefore, if you want to be able to create a network while working in a sales order, you must have maintained the corresponding MRP data or strategy group for the material being sold.
SAP has predefined the following strategy groups:
In both cases, the system automatically creates a network with network type PS04.
Do not change the default settings that SAP provides in Customizing. You can use these defaults to set up your own strategy groups, requirement types etc. and specify other network types or other settings for the availability check.