Currently you cannot add namespaces to XML documents directly as it is not yet supported in the in built Python xml package. So you will need to add namespace as a normal attribute to the tag. For example,import xml.dom.minidom doc = xml.dom.minidom.Document() element = doc.createElementNS('http://hello.world/ns', 'ex:el') element.setAttribute("xmlns:ex", "http://hello.world/ns") doc.appendChild(element) print(doc.toprettyxml())This will give you the document,

You can read HTTP using file_get_contents("php://input")Try using this link-https://www.php.net/manual/en/reserved.variables.php

Yes, this is feasible. You can create simple transformation for XML in ABAP. You can also use cl_proxy_xml_transform to transform data between XML and ABAP. Let us say that you have created ABAP proxy using T-Code: SPROXY or it is generated via WebService generation utility, you can use utility class “cl_proxy_xml_transform” to convert data of the ABAP to XML format or also from XML → ABAP.

No, there is no other possibility of doing it until you code everything on your own. It seems to be an issue during de-serialization.Most probably it is relevant to the parameters that you are sending in the response.You can try and enable tracing to detect further and check out where it is going wrong.

Yes, you should use your SOAP extension into your client app.ExampleTry adding the below code:               DebugTools.SOAP.SOAPTrace is the namespace of the SoapTraceExtension.DebugTools.SOAP is the name of the assembly containing the soap trace code.