getTransportDetails操作会在获取调度运输（TransportDetail）信息时返回CarrierName字段。以下是使用Python语言中的Boto3 SDK调用getTransportDetails操作以获得CarrierName字段的示例代码：

import boto3
from botocore.config import Config

config = Config(region_name='your_region_name')
access_key = 'your_access_key'
secret_key = 'your_secret_key'
session_token = 'your_session_token'

# Create a session with your credentials
session = boto3.Session(
    aws_access_key_id=access_key,
    aws_secret_access_key=secret_key,
    aws_session_token=session_token,
)

# Create a FulfillmentInbound client
fba_inbound = session.client('fba_inbound', config=config)

# Call getTransportDetails and retrieve the CarrierName field
response = fba_inbound.get_transport_details(
    ShipmentId='your_shipment_id',  # Replace this with the ID of your shipment
    IsPartnered='your_is_partnered_value',  # Replace this with a boolean indicating if your shipment is partnered or not
    ShipmentType='your_shipment_type'  # Replace this with the type of your shipment, either 'SP','LTL','TL'
)

carrier_name = response['TransportDetails']['PartneredLtlData']['CarrierName']
print('Carrier Name:', carrier_name)

此代码示例调用getTransportDetails操作以获取特定货运的运输详细信息，并在响应中检索CarrierName字段值。请确保替换任何示例中的占位符值（如替换your_region_name、your_access_key等）。