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 found a situation where t-code vf01 is creating billing invoice. but in T-code smartforns there are 5 Smartforms related to invoice. then how to decide the which smartform is being used.