NumGetFirstFree

POST /DocsVision/StorageServer/StorageServerService.asmx HTTP/1.1
Host: DOCSVISION_SERVER.COM
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://schemas.docsvision.com/Platform/2009-02-03/StorageServer/NumGetFirstFree"

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <NumGetFirstFree xmlns="http://schemas.docsvision.com/Platform/2009-02-03/StorageServer/">
      <sessionId>guid</sessionId>
      <numeratorId>guid</numeratorId>
      <zoneName>string</zoneName>
      <userId>guid</userId>
    </NumGetFirstFree>
  </soap:Body>
</soap:Envelope>

HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <NumGetFirstFreeResponse xmlns="http://schemas.docsvision.com/Platform/2009-02-03/StorageServer/">
      <number>int</number>
      <NumberId>guid</NumberId>
    </NumGetFirstFreeResponse>
  </soap:Body>
</soap:Envelope>

session.headers['SOAPAction'] = "http://schemas.docsvision.com/Platform/2009-02-03/StorageServer/NumGetFirstFree" (1)

body = """<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <NumGetFirstFree xmlns="http://schemas.docsvision.com/Platform/2009-02-03/StorageServer/">
      <sessionId>6565c75b-298d-e511-9417-90e6ba57b9f8</sessionId>
      <numeratorId>A16E9792-5B88-E511-9417-90E6BA57B9F8</numeratorId>
      <zoneName>SimpleZone</zoneName>
      <userId>C9449204-39AD-4DD8-B212-7C38580BD2BB</userId>
    </NumGetFirstFree>
  </soap:Body>
</soap:Envelope>""" (2)

response = session.post(url, data=body) (3)

responseParsed = ElementTree.fromstring(response.content)
print(responseParsed.findtext(".//{http://schemas.docsvision.com/Platform/2009-02-03/StorageServer/}NumberId")) (4)