If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
I am creating a Purchase Requisition using MRP. (Transaction MD50). I am looking for an user exit or BADI which allows me to change Purchase Requisition line item before the Purchase requisition is saved.