Not getting Task Id while running API call(Export Action)

Hi all, 
I am using python for integration. After authentication part, I got Export Id through API call.
Now using that Export Id for getting Task Id with API Post Method :

headers = {'Authorization': 'AnaplanAuthToken %s' % token, 'Content-Type': 'application/json'}
data = json.dumps({'localName': "en_US"})

response =
"" + "/workspaces/" + wsId + "/models/" + modelId + "/exports/" + exportId + "/tasks/",

 But I am getting Status Message: Bad Request, Status code: 400

What should I do ? Is there any problem with URL or something ?
What could be the reason for that ?

Best Answer