The backbone of Alloy by IBM and SAP architecture is Web services communication between trusted parties, namely IBM and SAP. Both asynchronous and synchronous communication between IBM and SAP is through the Web services database NDERPws.nsf. This article explains the role of this database and how to use it from both an administrator and a user perspective, and how to troubleshoot some common issues...

Source: http://www.ibm.com/developerworks/lotus/library/alloy-database/index.html?referer=news4notes.com