John Jordan John Jordan is the founder and principal consultant at ERP Corp. Clients gain transparency of production costs, resulting in increased efficiency and profitability with John's expert assistance. He regularly speaks at conferences and publishes articls, provides training sessions for clients, and is the author of Production Variance Analysis in SAP (2nd ed., 2011) and Product Cost Controlling with SAP (2nd ed., 2012), both SAP PRESS bestsellers. John is considered one of the leading experts in the SAP ERP Controlling component by clients and peers. Read More Read Less