Carrier specific requirements

The API is built to communicate with many carriers. However, each carrier has their own restrictions and requirements for creating shipments. Below you will find a list of every carrier specific requirement and restriction that the currently integrated carriers have for a shipment.


Attribute Restriction/Requirement When
description Cannot exceed 20 characters. Always


Attribute Restriction/Requirement When
recipient_address Needs to be an existing address. Always. Address validation is performed when creating the shipment1. An incorrect postal code, for example, will immediately cause the shipment registration process to fail.

  1. Other carriers also have address validation built in, but some will correct the address based on the best match instead of failing the registration process. [return]