iCore participated and presented the project views on interoperability issues and challenges at IoT Interoperability workshop on 26th March 2012, Paris. The workshop was organised by the EU FP7 PROBE-IT project as part of the Activity Chain 04 within the European Research Cluster on the Internet of Things (IERC). The workshop main objective was to discuss the main IoT interoperability issues, share good practices and lesson learned amongst the participants. The workshop main result was the definition of further action plans for the write-up of a positioning paper outlining the issues, requirements and guidelines for IOT interoperability testing.