Problem configuring webservice consumer

Situation:

I'm having problem building a simple WebService-consumer in Adeptia

This is the Error-message I get

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HTTP ERROR 500
Problem accessing /adeptia/wsoperationselection.jsp. Reason:
Problem in making connection with wsdl file location:Error in loading WSDL file " https://testwebservice?wsdl" : sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Cause:

This occurs when the server certificate is not issued by the certification authority, but is self signed.

Solution:

Download the valid server certificate and place it inside the truststore folder: \AdeptiaServer\ServerKernel\etc\truststore

Then Set up this Certificate for Web Service calls by using the following Forum link:
http://support.adeptia.com/entries/21277347--Setting-up-Certificate-for-Web-Service-calls