Solved
Please refer few articles,
- "PKIX path building failed" is seen when initially configuring or updating PingFederate SSL/TLS for ThingWorx Platform/ThingWorx Navigate
- getting error (PKIX path building failed) on integration connector with integrity(ILM)?
- Error "PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target" in Integration-runtime.log
- "PKIX path building failed" is seen whn trying to register or use Solution Central functionality on ThingWorx Platform
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