Track by Reference

Use the order ID, purchase order, or invoice you stored when the label printed, plus the paying account. This is not a public search. Only that account sees the match.

A Reference Is What You Typed on the Label

Create a Shipment and the API both accept a reference field. If you left it blank, there is nothing to search. The tracking number still works on Track a Package.

Corporate accounts often put the ERP order ID in that field so customer service can find a carton without asking the warehouse for the Vandelta number. Guest labels rarely have a reference.

Track a Package

Shipment documents next to outbound cartons

When to Use Each Search

Tracking number

You have the label, a scan email, or a number the buyer forwarded. One carton, one result.

Track a Package

Reference plus account

You have the order or invoice and you are the payer. Several cartons can share one PO; the result is a list.

Multiple Shipments

Also in tracking: Track a Package · Multiple Shipments · Proof of Delivery · Delivery Alerts

Print the Next Label with a Reference

Store the order ID when you create the shipment so this search works later.

Create a Shipment Open an Account