Automatic Assignment of quantity contract to sales order line item

[Rohit_Zalani]

Hi All

We have a requirement where we have a quantity contract created based on departments within a ship to customer. Since the Ship to location is the same, we have mapped the individual departments to be as unloading points within a Ship to Customer. 

We have a requirement to be able to maintain a single quantity contract with the line item unloading point specifying the department within the Ship to customer. 

I would appreciate inputs from esteemed members on the following:

a. When we create a sales order, the need is to have the system determine the appropriate contract based on the unloading point entered in the line item automatically. We tried using BADI_SD_REF_DOC_CUST but it seemingly only controls the content in the pop-up window but does not assign the underlying contract to the line item.

b. When the order is received via EDI, our need is to assign the appropriate contract automatically to the sales order line item

c. If the unloading point is modified, can the reference be modified once it is assigned ?

d. A contract can be assigned at the header or can also be assigned at the line item level. What is the difference between the two options ?

Appreciate inputs from members.