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 want to creat documents by bapi:BAPI_ACC_DOCUMENT_POST.Sometime interface want to tell reversal date,but this FM has no this parameter(only reversal reason).