Hi Paul,
The error :
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
is triggered by handling the certificate from your backend store for ssl.
As I understand, the Custom Authentication scheme open the ssl
connection to the backend server.
Where have you set the backend server ? In the AdminUI or in the
cert8.db file of the Policy Server installation ?
Does the Policy Server JDK installation is configured with JCE patches ?
Best Regards,
Patrick