Unable to serialize HDB Housekeeping
Explanation
HDB Housekeeping can make large changes to the HDB
Register and therefore only one Housekeeping job might be active against
an HDB Register dataset at any one time. In this case, another Housekeeping
job was already active against the HDB Register.
System action
The Housekeeping job is terminated.
User response
Ensure that no more than one Housekeeping job is
concurrently active for a specific HDB Register.