Couldn't send data to Merge ATS

[anntdiv]

Hi,
I'm testing Merge ATS SDK by sending Attachment using Python example code provided but got error:
Exception when calling AttachmentsApi->attachments_create: (400) Reason: Bad Request HTTP response headers: HTTPHeaderDict({'Date': 'Fri, 16 Jul 2021 11:52:34 GMT', 'Content-Type': 'application/json', 'Content-Length': '95', 'Connection': 'keep-alive', 'Allow': 'GET, POST', 'X-Frame-Options': 'DENY', 'Vary': 'Accept-Language, Cookie, Origin', 'Content-Language': 'en', 'Strict-Transport-Security': 'max-age=15724800; includeSubDomains', 'X-Content-Type-Options': 'nosniff', 'X-XSS-Protection': '1; mode=block', 'Set-Cookie': 'sessionid=38q4nnkz8mj0949h9sgjpdqvnfgh8nd8; expires=Fri, 30 Jul 2021 11:52:34 GMT; HttpOnly; Max-Age=1209600; Path=/; SameSite=Lax; Secure', 'CF-Cache-Status': 'DYNAMIC', 'Expect-CT': 'max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"', 'Server': 'cloudflare', 'CF-RAY': '66fb066cce783d7c-HKG', 'alt-svc': 'h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, h3=":443"; ma=86400'}) HTTP response body: {"non_field_errors":["Merge does not yet support this operation for the provided integration"]}

Info:
Integration ATS: Breezy HR

Python code:
with MergeATSClient.ApiClient(configuration) as api_client:
api_instance = attachments_api.AttachmentsApi(api_client)
x_account_token = account_token # str | Token identifying the end user.
remote_user_id = remote_user_id # str | The ID of the RemoteUser deleting the resource. This can be found in the ID field (not remote_id) in the RemoteUser table.
run_async = True # bool | Whether or not third-party updates should be run asynchronously. (optional)
attachment_request = AttachmentRequest(
remote_id="11167",
file_name="Candidate Resume",
file_url="http://alturl.com/p749b",
candidate="2872ba14-4084-492b-be96-e5eee6fc33ef",
attachment_type="RESUME",
)

try:
    api_response = api_instance.attachments_create(x_account_token, remote_user_id, run_async=run_async, attachment_request=attachment_request)
    pprint(api_response)
except MergeATSClient.ApiException as e:
    print("Exception when calling AttachmentsApi->attachments_create: %s\n" % e)