Berli, WalterLübke, DanielMöckli, WernerPlödereder, E.Grunske, L.Schneider, E.Ull, D.2017-07-262017-07-262014978-3-88579-626-8Supply Chain Management is a very popular and already mature topic between companies in which business processes are coordinated across company borders. However, there are also business processes that span not only companies but also public services. One example is the mortgage business in which banks and insurances are involved as private partners but interact with land registries and notaries which are public partners. Terravis is a platform that integrates the business processes between these parties and offers a high business value by being capable of doing end-to-end processing without media conversions. Such an effort is nevertheless complicated due to the number of interacting parties, different mindsets and different goals. Within this paper we discuss challenges integration projects face and describe experiences about how these challenges can be addressed.enText/Conference Paper1617-5468