HP 20/700 - Manual (Page 109)

108 Operating in Automated Mode Chapter 4
Note HP strongly advises that you do not enter unlabeled cartridges.
Your client software determines what happens when you enter a
cartridge with an unreadable label. Under ordinary conditions,
the camera on the hand audits the CAP and recognizes that a
cartridge is present, but the hand does not move it. You must
remove the cartridge from the CAP.
In this situation, your software might direct the library to stop
operating. Some software might prompt you to type in a label
number when no VOLSER is read. Typing in a label number
might cause a problem later during an audit because the
camera still will not be able to read the unreadable VOLSER on
the cartridge.
Figure 28 Removing the CAP Magazine
C65027