Hi, 

Previously I was receiving an error " Failed to parse wsdl: Unsupported Schema element found http://www.w3.org/2001/XMLSchema:include. At: 17:125". 
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="x1.URL" xmlns:ibmSchExtn="x2.URL">
<!-- <xsd:include schemaLocation="some link"/> -->
    </xsd:schema>

So I have commented out some part of the WSDL code i.e., the tags which are not supported by WSDL2Apex Conversion. 

Later on I'm receiving the new error:
Apex Generation Failed
Unable to find soap 1.1 address

I'm unable to proceed further, any help would be appreciated if anyone knows how to fix the above error.