Tape volumes were not ejected from the ACSLS library because the library CAP ID was not specified in the CHECKOUT LIBVOLUME command. By default, all CAPs initially have a priority value of 0, which means that the ACSLS server does not automatically select a CAP.
The system failed to eject the tape volumes.
To verify the CAP priority value, issue the QUERY CAP command. If the priority value is 0, reissue the CHECKOUT LIBVOLUME command with a CAP ID. Alternatively, set the CAP priority to a non-zero value and reissue the CHECKOUT LIBVOLUME command.