| Name | Type | Description | Notes |
|---|---|---|---|
| b64 | string | The Base64 encoded byte stream | [optional] |
| zpl2 | string | The document in zpl encoding | [optional] |
| url | string | URL reference to download document | [optional] |
| file_format | string | format of the encoded bytes | [optional] |
| print_format | string | The print format used. Customs documents and cash on delivery documents can only be returned in format A4. | [optional] |