Check the jcc configure log on the Access Gateway for the successfully wrote: signing.keystore message.
Verify /opt/novell/devman/jcc/certs/esp/<id>/signing.keystore file exists and its size is more than 32 bytes
Use keyinfo script and keytool to check the certificates.
If any empty file exists delete it.
In the Administration Console, click.
Enable the keystore device or cluster that has been deleted in the Access Gateway and it needs to be re-pushed.
Restart Server Provider of the Access Gateway.