FedEx REST API（上传文档）：无效请求：无效输入：传入请求[代码 1001]

Question

我正在尝试创建一个简单的 Python 脚本来通过新的 FedEx REST API 上传 PDF 文档。

下面是我的最小代码示例，可用于通过在脚本旁边放置文件

file.pdf

并更新为您自己的 FedEx REST API 生产凭据来复制问题。

在运行代码时，我收到以下错误消息。任何意见表示赞赏：

{
    "customerTransactionId": "ETD-Pre-Shipment-Upload_test1",
    "errors": {
        "code": "1001",
        "message": "Invalid request: invalid input : Incoming Request"
    }
}

我的代码如下：

# minimal class for upload docs test
class FedexLabelHelper:
    def __init__(self, fedex_cred):
        self.fedex_cred = fedex_cred
        self.access_token = ""

        return

    # function for retrieving access_token
    def get_access_token(self):
        import json, requests

        url = self.fedex_cred["url_prefix"] + "/oauth/token"

        payload = {
            "grant_type": "client_credentials",
            "client_id": self.fedex_cred["key"],
            "client_secret": self.fedex_cred["password"],
        }

        headers = {"Content-Type": "application/x-www-form-urlencoded"}

        response = requests.request("POST", url, data=payload, headers=headers)
        access_token = json.loads(response.text)["access_token"]
        self.access_token = access_token

 
    # function for uploading PDF document 
    def upload_pdf_document_fedex_script(self):
        import requests, binascii

        fileName = "file.pdf"

        file_content = open(fileName, "rb").read()
        file_content_b64 = binascii.b2a_base64(file_content)
        file_content_b64.decode("cp1250")

        url = self.fedex_cred["doc_url_prefix"] + "/documents/v1/etds/upload"

        payload = {
            "document": {
                "workflowName": "ETDPreshipment",
                "carrierCode": "FDXE",
                "name": fileName,
                "contentType": "application/pdf",
            },
            "meta": {
                "shipDocumentType": "COMMERCIAL_INVOICE",
                "originCountryCode": "DK",
                "destinationCountryCode": "BE",
            },
        }

        files = [
            (
                "attachment",
                (fileName, "file_content_b64", "application/pdf"),
            )
        ]

        headers = {
            "Authorization": f"Bearer {self.access_token}",
            "x-customer-transaction-id": "ETD-Pre-Shipment-Upload_test1",
            "Cookie": "XYZ",
        }

        response = requests.post(url, headers=headers, data=payload, files=files)

        print(response.text)

  
# -----------------------
# setup minimal test of the FedEx Upload Documents REST API
fedex_cred = {
    "production": {
        "url_prefix": "https://apis.fedex.com",
        "doc_url_prefix": "https://documentapi.prod.fedex.com",
        "key": "XYZ",
        "password": "XYZ",
        "freight_account_number": "XYZ",
    },
}

flh = FedexLabelHelper(fedex_cred["production"])
flh.get_access_token()
flh.upload_pdf_document_fedex_script()