I have the hint of you to use the Badi ME_PROCESS_REQ_CUST for my request.
However, I have researched slightly and do not know how to implement this Badi especially for my case.
Which method should I take here actually to lock an item of Purchase Requisition ?
Not allowing to make a change at some Purch. Req.
Has someone an example of me.
Any help on this would be highly appreciated.