As you develop a model, sometimes objects get created and discarded during the process. These objects are kept in the model in case the user decides to use them at a later point. When you want to clear all the unwanted objects, just go to “Tools -> Clean Up Model”. TEAMS-Designer will go through the model and create a list of unused objects. You will be prompted with a dialog listing all the unused objects, if you wish to keep any of the objects just de-select them before proceeding.