Abstract. Business process models can be represented as stand-alone models and as a par-of a system of models. In the case of the system of models the business process model elements can be a part of other models that are included in the system of models. Each model that relates to the business process via its element can be regarded as a dimension of the business process. Thus the organizational structure model (performer model), goal model, decision model, location model, and other models represent a particular dimension of the business process. One of the dimensions that have not yet evolved into a model that could be easily related to the business process is knowledge dimension. The problem resides in the not fully agreed-upon understanding of the relationship between such notions as data, information, and knowledge. The concept of information code allows to look closer at knowledge dimension of the business process and to clarify several issues with respect to this dimension and its proper place in business process model representation.