A method to model the interaction between a production control process and an information system is presented. Colored Petri Nets are used to model the process and UML static structure. When the tokens in the internet are modeled as objects in the data model, the transitions in the process model can be specified as formal expressions over the data model. Thus the model verifies the consistency between the process and the information system and can be used as formal specification for e.g. an ERP implementation.