The implementation of ERP5 Infoterra´s TerraSAR-X Commercial Service Segment (TSXX) has reached a major milestone with the delivery of a complete order management system as an integrated element of the overall TSXX back office landscape with several interfaces, e.g. to DLR, EADS Astrium SAP, and Receiving Stations located around the globe by Unilog Avinci in December 2005. Infoterra GmbH holds the exclusive commercial exploitation rights for TerraSAR-X and is currently installing the Commercial Service Segment for the spacecraft. ERP5 is an advanced open source ERP software created by Nexedi. The implementation of ERP5 for the TerraSAR-X was conducted by Unilog Avinci Munich Office with the support of Nexedi and Nuxeo.