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 have a requirement wherein I want to use a user exit to prevent creation of PR upon saving of the sales order. If Customer PO No. field is blank, then purchase requisition should not be created.