Creating mapping from the data flow modeler Open the menu by clicking the hamburger icon. Select Connect > Data Flows. Open a data flow or create a new one. Add a Mapping activity to the flow. In the properties pane, click New and select the mapping type. The Mapping details page is displayed. Save the mapping and click Back to return to the flow. Select Connect > Mappings A list of existing mappings is displayed including the mapping that was created using the previous steps.