maintain account assignment category K
I have an issue regarding to activate account assignment category for purchase materials so that when user raise PO for marketing, capex and services using PO document type ZNI1, they are able to put GL acc and cost centre. So in this case, i'm planning to maintain acc assignment cat K. I've never do any config regarding acc assignment category previously. So i don't know what are the steps from A - Z on how to configure it. I don't know what are the impact on accounting, inventory(if any), what data to be consider,what to maintain and where to maintain such like GL acc, cost centre, is there any link need to be set up between acc assignment category with item category and PO document type.. and on and on..
So can anyone please guide me step by step just like how u implement this in project? Please help..