When you arrive at the customer's location and the customer is unreachable, it will result in an undelivered order. An undelivered order is an order that was neither cancelled or delivered directly to the customer. In this case, follow the self-serve procedure on the Menulog Employed Courier App: 

• tap the “Having Trouble” banner to begin the self-serve Undelivered Order flow
• leave the checkmarks in the checkbox section to confirm that you followed the delivery process correctly
• tap to start the three minutes timer
• after three minutes is over, tap “mark undelivered” 
• the order should be left at the customer address, and you can move on to the next delivery
• you can leave self-serve flow at any time and mark the order as delivered if you were able to reach the customer