Undeclared namespace prefix "soapenv" error while using web service consumer - mule-studio

Question

I am using web service consumer in Mule4 and after configuration and deployed the application and triggered the target ARIBA SOAP service in logs I see below error:
org.apache.cxf.binding.soap.SoapFault: Error reading XMLStreamReader: Undeclared namespace prefix "soapenv"
at [row,col {unknown-source}]: [1,14]
When i explored the error I see it is an issue at target system end:], please let me know whether it is end system thrown error or any pointers on what would cause this issue
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Answer 1

The link you shared seems pretty clear. It is an issue on SAP Ariba side. The solution is also shared in the same page:
The error message is as follows:
<fault xmlns="http://www.bea.com/wli/sb/context">
<errorCode>OSB-380001</errorCode>
<reason>java.lang.RuntimeException: javax.xml.soap.SOAPException: Error parsing
envelope: most likely due to an invalid SOAP message.: Undeclared namespace prefix
"soapenv" at [row,col {unknown-source}]: [1,14] </reason>
For some reason Ariba doesn't seem to be declaring the SOAP XML namespaces in its responses.
If you receive the invalid soap message response error or some other invocation error from Ariba, you must enable the following property in the Ariba sand box.
Application.Messaging.Channels.Util.IncludeNameSpaceDetailsInErrorResponse
You have to follow the instructions to configure Ariba to include the namespaces in responses.