extmem.972edd Reloading DCSS <DCSS name> failed with rc=<return code>
Explanation
The DCSS kernel interface used z/VM diagnose call X'64' to reload a DCSS
in a different access mode. The DCSS was unloaded but z/VM failed to reload
the DCSS.
User response
For details about the return codes see the section about DIAGNOSE Code
X'64' in "z/VM CP Programming Services".