Checkpoint 

Definition

Location where vehicles and transportation units (TUs) arrive at or leave the yard. This can represent a physical gate at the yard entrance, or a virtual gate from which data is transmitted electronically.

Use

The checkpoint is where you register the arrival of vehicles and TUs in the yard and their departure from it. For more information, see Arrival at/Departure from Checkpoint.

Structure

You map checkpoints using Yard Bins. You must assign each checkpoint to a yard bin. This assignment must be unique, meaning you cannot assign two checkpoints to the same yard bin. You must also assign each checkpoint to a Supply Chain Unit (SCU), such as the SCU of the warehouse.