In order to increase enterprise performance, economics paradigms focus, now more than ever, on how to better manage information. The modern architecture of information systems is based on distributed networks with a grand challenge representing and sharing knowledge managed by those ISs. One of the main issues in making such heterogeneous Cooperative Information Systems (CIS) working together is to remove semantics interoperability barriers. This paper firstly analyses interoperability issues between CISs and then proposes patterns for data models conceptualisation for knowledge explicitation, based on expert knowledge injection rules and a fact-oriented approach. A case study is proposed related to a work order process in Sage X3, an Enterprise Resource Planning application.