The present invention relates to a Workflow Management System or a computer system with comparable functionality (WFMS). More particularly the invention relates to a method or means for generating a runtime compliant partner process for a given original process, wherein both processes are dedicated to interact with each other. In order to provide a method for generating a runtime compliant partner process for a given original process, which is easier understandable for a process developer, it is proposed to perform the steps of:Step 1: Identifying all activities of the original process interacting with the partner process,Step 2: Determining if an activity is able to be mirrored by a mechanism supported by the business process language, e.g. BPEL,Step 2.1: If yes, generating the mirrored activity and creating a respective activity name,Step 2.1: If not, using a predetermined mathematical method for dissecting such an activity that into a set of sub-activities, which can be mirrored,Step 2.2.1: Generating a respective mirrored sub-activity and creating a respective activity name for each sub-activity,Step 2.2.2: Arranging the mirrored sub-activities according to the outcome of the predetermined mathematical method.