Are there any parameters that can be used to debug SSLPeerUnverifiedExceptions downloading with CA CSM?
To help debugging this you could code these lines in your SAMPLIB(MSMLIB)
They could be inserted after
IJO="-Xms128m -Xmx9900m -Xss768m"
MSMTC should be recycled.
The resulting trace will show unsupported cipher suites and missing certificates.