我正在尝试在Watson发现中更新文档，但收到INVALID请求错误。我想更新发现集合中的文档。

authenticator = IAMAuthenticator('***')

discovery = DiscoveryV1(
    version='2019-04-30',authenticator=authenticator
)

collection_id = "***"

config_id = "***"

env_id = "***"

res  = discovery.query(environment_id=env_id,collection_id=collection_id,count=200)

response = discovery.update_document(environment_id=env_id,document_id="cos_7c6c60-7928-5bc7-8445-4d3f1c23b6")
print(response)

我得到的答复。

ERROR:root:The request is invalid.
Traceback (most recent call last):
  File "C:\Users\shiva_burade\AppData\Local\Programs\Python\Python36\lib\site-packages\ibm_cloud_sdk_core\base_service.py",line 157,in send
    response.status_code,error_message,http_response=response)
ibm_cloud_sdk_core.api_exception.ApiException: Error: The request is invalid.,Code: 400,X-global-transaction-id: a65576f5306e0a619e2cf7ca3272ca29
Traceback (most recent call last):
  File "update_doc.py",line 21,in <module>
    response = discovery.update_document(environment_id="303d6a2e-e001-42b7-97d1-ad364e49bcb1",collection_id="e0bc5127-05bb-4c5f-a216-47f1f43b47a3",document_id="cos_7c644c60-7928-5bc7-8445-4d3f1c23b650")
  File "C:\Users\shiva_burade\AppData\Local\Programs\Python\Python36\lib\site-packages\ibm_watson\discovery_v1.py",line 1442,in update_document
    response = self.send(request)
  File "C:\Users\shiva_burade\AppData\Local\Programs\Python\Python36\lib\site-packages\ibm_cloud_sdk_core\base_service.py",X-global-transaction-id: a65576f5306e0a619e2cf7ca3272ca29