we are getting below error when connecting to our known partner
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target[ValidatorException/PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target]
This is a mainly a negotiation problem on the protocol level. Your partner rejected your connection.
Either your partner expected a secure connection (HTTPS) and you tried a raw connection (HTTP) or vice versa.
It is also possible that your partner expects an other SSL/TLS protocol version or cipher than you offer.
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AS2
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The root certificate is…
Submitted by vishnuk15 on Mon, 06/07/2021 - 17:02
The root certificate is missing in the mendelson AS2 config. Please identify the root CA and add it to the TLS/SSL certificate list.