>>> import json
>>> import requests
data={
... "authenticateTestRequest": {
... "merchantAuthentication": {
... "name": "##########",
... "transactionKey": "###########"
... }
... }
... }
>>> r=requests.post('https://apitest.authorize.net/xml/v1/request.api',json=data)
>>> r.text
'\ufeff{"messages":{"resultCode":"Error","message":[{"code":"E00003","text":"The element \'merchantAuthentication\' in namespace \'AnetApi/xml/v1/schema/AnetApiSchema.xsd\' has invalid child element \'name\' in namespace \'AnetApi/xml/v1/schema/AnetApiSchema.xsd\'. List of possible elements expected: \'mobileDeviceId\' in namespace \'AnetApi/xml/v1/schema/AnetApiSchema.xsd\'."}]}}'
