Problem: The BlackBerry device client cannot set up a secure connection and reports aSynchronizationException message that indicates a certification problem.
Communication error sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested targetDetails:
Explanation: One of the most common causes for not being able to set up a secure connection is an invalid certificate.
Solution: Make sure the certificate is valid, and the secure connection is set up correctly.