I have set an approval in my resource and when the resource is requested, the RBPM Driver gives me this error into trace and approver does not see the request in his dashboard as is supposed to:

DirXML Log Event -------------------
Driver: \IDVAULT-abc\abc\DriverSet\Role and Resource Service Driver
Channel: Subscriber
Status: Error
Message: Unable to start Approval Workflow
Workflow DN: cn=Resource Approval,cn=RequestDefs,cn=AppConfig,cn=UserApplic ation,cn=DriverSet,o=abc
Reason: java.lang.RuntimeException: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderE xception: unable to find valid certification path to requested target

I am not sure, what could be wrong, since the server certificate is properly in the cacerts keystore (triplechecked) and apart from this, everything (as far as I can see) is functional. How come the RBPM Driver does not accept the certificate?

In configupdate.sh I found Reinitialize RBPM Security checkbox, there is a note, that redeploy of UserApplication is required? Would it, in theory, help? Redeploy means deploy from designer?

Thank you for any helpers.

trace here