"invalid web service URL" error for create web service system

Hi.

I want to call web service in visual composer and try to create Web Service definition.

When I push create button in visual composer, I got "invalid web service URL" error.

My web service is located in SAP ABAP System and I can check WSDL URL in web service homepage.

(http://mycompany.com:8000/sap/bc/srt/rfc/sap/ZTEST?sap-client=500&wsdl=1.1)

Any ideas for this error ?

Regards, Arnold.