customer service linking sales order
I would like to know why and where we need to link the sales order.I am new to cs and sd....wanted to know when we do some services for the equipment which is at the customer location....we will create the service order and enter all the labour parts to refelct the cost....in this case do we need to write a sales order ?
if yes why we need to do tht ? if not when we have to write the sales order linking to cs....
it would be great if anyone explain the flow between cs