Abstract. The United Nation's Centre for Trade Facilitation and Electronic Business (UN/CEFACT) is an e-business standardization body. It is known from its work on UN/EDIFACT and ebXML. One of its ongoing work items is the UN/CEFACT modeling methodology (UMM) for modeling global choreographies of B2B scenarios. The goal of UMM is defining a shared business logic between business partners and fostering reuse of standardized process building blocks. The latest UMM version