Question
What is a TCN and where do I find it?
Answer
The Transportation Control Number (TCN) is a unique 17 character alphanumeric identifier. It is used to manage products that are destined for OCONUS locations through every stage of the supply chain to ensure the shipment is moving in the right direction and delivered to the correct end user.
The TCN configuration is as follows:
The TCN for shipments is provided to vendors on the purchase order in box 10 on page 11.
See the attached power point presentation, which includes illustrations showing where you can find the TCN on GSA Form, 3186, GSA Advantage Orders, and EDI 856.