My SOAP post response is not returning 200 in Python, but it works in Postman - python-3.x

Question

So I ran my post method for SOAP in Postman and received 200, the response headers had text/xml; charset=utf-8 for Content type. My Headers in Postman excluding the default values are
ClientID 700,
SOAPAction urn,
Content-Type text/xml
url = www.xyz.com.svc
The SOAP raw XML used to run in Postman.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header>
<wsse:Security soapenv:mustUnderstand="1" xmlns:wsse="http://docs.xsd" xmlns:wsu="http://docs.oa.xsd">
<wsse:UsernameToken wsu:Id="UsernameToken-1234">
<wsse:Username>E</wsse:Username>
<wsse:Password Type="http://docs.o-username-token-profile-1.0#PasswordText">abcd</wsse:Password>
<wsse:Nonce EncodingType="http://docs.o.security-1.0#Base64Binary">happy</wsse:Nonce>
</wsse:UsernameToken>
</wsse:Security>
</soapenv:Header>
<soapenv:Body>
<ConfirmAppointment xmlns="urn:CompanyNameServices" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<!--string occurs:0,1-->
<PatID xsi:nil="false">A1</PatID>
<!--string occurs:0,1-->
<PIDType xsi:nil="false">B</PIDType>
<!--string occurs:0,1-->
<MyCID xsi:nil="false">1</MyCID>
<!--string occurs:0,1-->
<MIDType xsi:nil="false">External</MyIDType>
<!--string occurs:0,1-->
<AppCID xsi:nil="false">1</AppCID>
</ConfirmAppointment>
</soapenv:Body>
</soapenv:Envelope>
I am trying to run this using Python requests.post, here is my code.
soap_body = '''
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header>
<wsse:Security soapenv:mustUnderstand="1" xmlns:wsse="http://docs.xsd" xmlns:wsu="http://docs.oa.xsd">
<wsse:UsernameToken wsu:Id="UsernameToken-1234">
<wsse:Username>E</wsse:Username>
<wsse:Password Type="http://docs.o-username-token-profile-1.0#PasswordText">abcd</wsse:Password>
<wsse:Nonce EncodingType="http://docs.o.security-1.0#Base64Binary">happy</wsse:Nonce>
</wsse:UsernameToken>
</wsse:Security>
</soapenv:Header>
<soapenv:Body>
<ConfirmAppointment xmlns="urn:CompanyNameServices" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<!--string occurs:0,1-->
<PatID xsi:nil="false">A1</PatID>
<!--string occurs:0,1-->
<PIDType xsi:nil="false">B</PIDType>
<!--string occurs:0,1-->
<MyCID xsi:nil="false">1</MyCID>
<!--string occurs:0,1-->
<MIDType xsi:nil="false">External</MyIDType>
<!--string occurs:0,1-->
<AppCID xsi:nil="false">1</AppCID>
</ConfirmAppointment>
</soapenv:Body>
</soapenv:Envelope>'''
headers = {
'ClientID': '700',
'SOAPAction': 'urn',
'Content-Type': 'text/xml'
}
response = requests.post(url=url, data=soap_body, headers=headers)
print(response)
My output:
<Response [500]>
If I add <?xml version="1.0" encoding="UTF-8"?> to the beginning of my body, my output:
<Response [400]>
What am I doing wrong here?

Answer 1

Here are 2 sample SOAP requests. See if they work for you.
import requests
url = "https://httpbin.org/post"
headers = {"content-type" : "application/soap+xml"}
body = """
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:req="https://httpbin.org/post">
<soapenv:Header/>
<soapenv:Body/>
</soapenv:Envelope>
""".strip()
response = requests.post(url, data = body, headers = headers)
print(response.content.decode("utf-8") +'\n')
###########################################
url = "https://www.dataaccess.com/webservicesserver/NumberConversion.wso"
headers = {"content-type" : "application/soap+xml"}
body = """
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<NumberToWords xmlns="http://www.dataaccess.com/webservicesserver/">
<ubiNum>500</ubiNum>
</NumberToWords>
</soap:Body>
</soap:Envelope>
""".strip()
response = requests.post(url, data = body, headers = headers)
print(response.content.decode("utf-8") +'\n')