A shipping code was a document that listed the name and address of the party who ordered a shipment.

In 2369, Nog suggested that the Bajoran who originally ordered the self-sealing stem bolts they were trying to sell could tell them what the items were, and believed his name might be on the shipping codes. Jake Sisko checked and found Sirco Ch'Ano's name and address on the document. (DS9: "Progress")