Done or                                                                        
                                                                                      no unfilled                                                                    
                                                                                       items?                                                                        
                                                                                                                                                         [False]     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                    Choose item                                                                                      
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                    Find item                                                                                                        
                                                    (Locate product)                                                                                                 
                                                    Use Case                                                                                                         
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                          Item Found?                                                                
                                                                                                                                                                     
                                                                                                                                                         [Yes]       
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                    Find Item                                                        
                                                                                                    Quantity                                                         
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                       Reduce Inventory                                                                                              
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                     
                                                                                                                                                                 [No]