Organisational interoperability requires a matching of goals and provided and required services between interacting organizations. It is being shown that the recent OMG standards BMM and SoaML can be used by business people to reach this agreement, as well as serve as a foundation for describing the realization of interoperability through cross organisational business processes and further realization of IT support with semantic and technical service interoperability. We illustrate the approach with an example of service identification from the Norwegian national Health ICT architecture.