You model a data flow for a recurring task if the same function is to be passed through several times. For example, this is necessary if several persons have to coordinate whether a change is accepted, or if the same notification is to be sent multiple times to different persons. In this case, in the associated control flow the Executor selection attribute on the carries out connection should have the All from preselection, All required or Voting value. The attribute is in the Process automation attribute group.