The Quantity Conversion Interface (QCI) is a SAP product and an integral part of the SAP Oil & Gas ERP solution. Quantity conversion calculations for all bulk logistics processes are implemented via this interface. Every customer running highly integrated logistics processes within the SAP Oil & Gas ERP system has to design & build their own quantity conversion logic. The SAP QCI itself – out of the box – provides only an example conversion logic based on the German industry standard DIN 51650, however WITHOUT the standards’ special rounding. The Working Paper “SAP QCI in a Nutshell” can be found in our Knowledge Base.