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.
Display the Customer Number on the basic list using the KNA1 table. If a Customer Number is chosen on this list, then the sales record of that Customer Number should be displayed in the next level from KNVV