Error Encountered with Teams Incoming Webhook: Missing CreatedByObjectId

Question

While testing a Teams incoming webhook URL, the following error occurs despite receiving a status code of 200:

System.ArgumentNullException: Value cannot be null. (Parameter 'CreatedByObjectId cannot be null or empty')

This parameter was not an issue last week. Is there documentation available that explains this API?

import requests
import json

url = "Webhook URL" 

data = {
    "message": "Hello, this is a test message!",
    "summary": "test summary",
    "text": "test text from example_post.py",
}

headers = {
    "Content-Type": "application/json"  # Ensure it is set to send JSON data
}

response = requests.post(url, data=json.dumps(data), headers=headers)

if response.status_code == 200:
    print("Response status code:", response.status_code)
    print("Response text:", response.text)
else:
    print("Response status code:", response.status_code)

Answer 1

Hi @Tianen Xiang (Wicresoft North America Ltd)

We are glad to know that the issue has been resolved.

• Recreate the webhook: It looks like recreating a new webhook URL fixed the issue.
• Use the Teams web app: If you encounter the issue in the desktop app, you can try using the Teams web app to configure the webhook.

If you wish, you can mark the summary for your reference in case you encounter the same issue in the future. In addition, this will also benefit other community members.

In the meantime, are you willing to monitor the issue for another week in case the issue occurs again?

Of course, if there is anything else we can do for you, please feel free to contact us.

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