Rest API Data Refresh NotifyOption

Hello, I am refreshing my published datasets via the Rest API in Python. It seems as though I cannot turn on the NotifyOption in my request. Trying to set the notifyOption to "MailOnCompletion" or "MailOnFailure" produces a 400: Bad Request result. I'm not sure if there is something wrong with my set up or if this is simply not allowed.

Here is my code:

dataset_url = f"https://api.powerbi.com/v1.0/myorg/groups/{workspace_id}/datasets"
header = {'Authorization': f'Bearer {access_token}','Content-Type':'application/json'}
url = 'https://api.powerbi.com/v1.0/myorg/groups/' + workspace_id + '/datasets/' +datasetid+ '/refreshes'
payload = {'refreshRequest':'y', 'notifyOption':'MailOnCompletion'}
data = json.dumps(payload)
response = requests.request("POST", url, headers=header, data=data)

The output of this code is:

{"error":{"code":"InvalidRequest","message":"NotifyOption parameter value is not supported for application requests","target":"Parameter value 'MailOnCompletion' is invalid for application requests"}}

If I remove the notifyOption or set notifyOption to "NoNotification" the request works fine and the desired dataset is refreshed.