CBR4105I No {eligible | MEDIAn} scratch volumes available in library library-name.
Explanation
An error has been detected during Library Automation
Communication Services (LACS) processing for the MOUNT or WAIT function.
Library library-name has indicated that there are
no more eligible scratch volumes in the library, so the mount scratch
request cannot be executed. 
Even though the host
may show that there are scratch volumes available, keep in mind that
the library may have reasons for which it does not consider scratch
volumes to be eligible for the mount. Virtual tape volumes that have
been returned to scratch and have a delete expire hold time associated
with them are not eligible to be mounted as scratch until their hold
time has expired. In addition to this, in
a TS7700 grid configuration,
this error can also be returned if no eligible volumes are owned by
the cluster performing the mount, or if the eligible volumes are owned
by another cluster and ownership cannot be obtained. This error can
also be returned in a TS7700 grid configuration if one of the clusters
has read-only ownership takeover enabled against it and all remaining
scratch volumes are owned by that cluster. If the job requested a
specific media type, the type is included in the message. If the job
did not request a specific media type and the device is capable of
mounting multiple media types, then there are no scratch volumes of
any eligible type and the message text specifies eligible.
The error may be reported by a unit check when the mount order is
first sent to the library, or by a failure completion code in the
attention message which signals mount completion.
System action
The LACS request fails with a permanent error return code. Messages issued by the caller of LACS are written concurrently with this message.
Operator response
Enter scratch cartridges into the library.
Programmer response
Resubmit the failing job.
Source
Object Access Method (OAM)
Routing Code
Set by the caller.
Descriptor Code
Set by the caller.