Source Management is the process of managing Sources within a DP. DP's often have specific requirements for their product that only certain ASU's can meet. Thus a rule is required which only allows product from certain sources to be supplied to that DP. This is called a “Mandatory Source”

The process of adding or removing mandatory sources is as follows.

1.) Within ALTO, search for the DP you would like to edit the source of.

2.) On the delivery point tab, located on the left side with the Distribution point page you will see a row called “Mandatory Sources” and source assignment