InFound started to work with SAP XI 3.0 in 2004 for a Hospital integrating the HL7 systems. Back in those days XI was not as mature as is today and many support packs were installed to keep up with the latest developments. To meet customer expectations we soon found out that the use of the open source library from HAPI enabled us to do the translations between HL7 and XML. Many projects followed using SAP PI ranging from boosting performance up to implementing B2B usng EDIFACT with the  Seeburger adapter.