Dr. Christiane Schnellenbach Dr. Christiane Schnellenbach worked for many years at SAP in consultant and project team training in the areas of SAP ERP and SAP Global Trade Services (SAP GTS). She is the author of several SAP standard training courses. After working in customs and VAT consulting for a large auditing and tax consulting firm and in in-house consulting for an industrial company, she now is a self-employed consultant with a focus on SAP GTS.