In spite of the great variety of potential advantages, it is also necessary to illuminate the real effects of Standard ERP Software in practice. Recent studies have revealed that 81% of German companies interviewed using SAP, do not fully exploit the software's ability to optimize business processes, though 61% stated that SAP offers very good process optimization opportunities. (CSC Ploenzke AC, 2002, "European SAP Practice, Umfrageergebnisse," SAPphire 2000). Therefore we evaluated popular life cycle models with respect to their suitability to implement Standard Software in a process driven way (Kuehl, R.W.A., and Knoell, H.-D., 2002, "Evaluation of Topical Approaches to the Implementation of Standardised ERP-Systems," Proc. ETCE 2002, CD, ASME Petroleum Division, Houston, TX).