OrderSystem { # Order System
n1: circle label:"Start"
n2: rectangle label:"Receive shipping request"
n3: rectangle label:"Validate shipping address"
n4: rectangle label:"Update tracking status"
n5: circle label:"End"
n1.handle(right) -> n2.handle(left)
n2.handle(bottom) -> Warehouse.n6.handle(top) [label="Pick order"]
n3.handle(bottom) -> Carrier.n14.handle(top) [label="Ship"]
n4.handle(right) -> n5.handle(left)
}
Warehouse { # Warehouse
n6: rectangle label:"Locate items in inventory"
n7: rectangle label:"Pick items from shelves"
n8: diamond label:"All items available?"
n9: rectangle label:"Pack items securely"
n10: rectangle label:"Flag backorder items"
n11: rectangle label:"Generate packing slip"
n12: rectangle label:"Apply shipping label"
n13: rectangle label:"Move to shipping dock"
n6.handle(right) -> n7.handle(left)
n7.handle(right) -> n8.handle(left)
n8.handle(right) -> n9.handle(left) [label="Yes"]
n8.handle(bottom) -> n10.handle(top) [label="No"]
n9.handle(right) -> n11.handle(left)
n10.handle(top) -> OrderSystem.n4.handle(bottom) [label="Partial ship"]
n11.handle(right) -> n12.handle(left)
n12.handle(right) -> n13.handle(left)
n13.handle(top) -> OrderSystem.n3.handle(bottom) [label="Ready"]
}
Carrier { # Carrier
n14: rectangle label:"Scan package barcode"
n15: rectangle label:"Load onto delivery vehicle"
n16: rectangle label:"Update tracking number"
n17: diamond label:"Delivery attempt?"
n18: rectangle label:"Deliver to recipient"
n19: rectangle label:"Leave at door"
n20: rectangle label:"Return to facility"
n14.handle(right) -> n15.handle(left)
n15.handle(right) -> n16.handle(left)
n16.handle(right) -> n17.handle(left)
n17.handle(right) -> n18.handle(left) [label="Recipient home"]
n17.handle(bottom) -> n19.handle(top) [label="Safe location"]
n17.handle(left) -> n20.handle(top) [label="Failed"]
n18.handle(top) -> OrderSystem.n4.handle(bottom) [label="Delivered"]
n19.handle(top) -> OrderSystem.n4.handle(bottom) [label="Delivered"]
n20.handle(top) -> OrderSystem.n4.handle(bottom) [label="Exception"]
}