The article discusses the basic steps of the electronic service design method using several languages, transformations between them and simulation. The inclusion of method which segments the process activity graph in these steps is evaluated. Merge requirements taking into account the process control flow are proposed to be implemented in the segmentation method so that could be used to solve problems concerning the selection of electronic service business process architecture. The solutions provided by this method can be interpreted as BPEL orchestrations, defining which activities could be implemented as web service calls. Using the proposed approach requirements can be defined in input data of segmentation method as well as during the execution of it. Possible solution of the implementation of requirements is also provided.