The Consumed Web Service Integrity warning is issued in the following situation:
Consumed SOAP web service <consumed web service> is outdated. The WSDL has changed since the consumed SOAP web service was created/refreshed: you should refresh the consumed SOAP Web Service before compiling it again.
Unable to access url <url> to verify if the <consumed web service> consumed SOAP web service is up-to-date: it is not possible to access the URL of your SOAP Web Service.
Check whether the URL is correct and the consumed SOAP Web Service is still available. If both conditions are valid and you still cannot refresh the Web Service definition, you should contact your Systems Administrator.
Consume a SOAP Web Service | About Warning Messages