# Ship-from address (header and line levels)

Source: https://developer.avalara.com/vat-erp/transactions/certification-requirements/ship-from-address/

**Element type:** Required

**Endpoints/models used:** [AddressesModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/AddressesModel/)

Your integration must provide a way for users to enter a ship-from (origin) address at the header or line levels of a transaction. If specified at the header level, the address applies to all lines on the transaction; if specified at the line level, the address applies only to that line in the transaction. For users, this is an optional field because not all transactions will be shipped from a location.

A ship-from address is added to your application using the `shipFrom` field in the [AddressesModel](https://developer.avalara.com/api-reference/avatax/rest/v2/models/AddressesModel/) at the header or line level.