An SSL/TLS certificate cert-label, or the default certificate cannot be found in the key ring or the certificate is not trusted. The channel is channel-name; in some cases its name cannot be determined and so is shown as ‘????’.
This can be caused by not having USAGE(PERSONAL) when the queue manager’s certificate is connected to the ring.
RACDCERT ID(START1) CONNECT(RING(MQRING) -
You can display the ring and a certificate with
RACDCERT LISTRING(MQRING) ID(START1)
RACDCERT LIST(LABEL(‘CSQ9CERT’ )) ID(START1)