How to add IOSS number to deliveries?
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      3. How to add IOSS number to deliveries?

      How to input IOSS number into Stamps.com solution

      This manual links to the Stamps.com guidelines for inputting IOSS number to the Stamps.com solutions.

      Follow this link to Stamps.com: https://www.stamps.com/article/how-to-input-vat-ioss-numbers-into-customs-forms/