# BatchShipmentBase
## Fields
| Field | Type | Required | Description | Example |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `shipment` | [components.ShipmentCreateRequest](../../models/components/shipmentcreaterequest.md) | :heavy_check_mark: | N/A | |
| `carrier_account` | *Optional[str]* | :heavy_minus_sign: | Object ID of the carrier account to be used for this shipment (will override batch default) | a4391cd4ab974f478f55dc08b5c8e3b3 |
| `metadata` | *Optional[str]* | :heavy_minus_sign: | A string of up to 100 characters that can be filled with any additional information you want
to attach to the object. | SHIPMENT #1 |
| `servicelevel_token` | *Optional[str]* | :heavy_minus_sign: | A token that sets the shipping method for the batch, overriding the batch default.
Servicelevel tokens can be found in this list
or at this endpoint. | fedex_ground |