BRMS no media in tape library error

All,

Before leaving home for work in the morning, I check email to insure the
IBM i backup completed. This morning I did not have that email so I VPN'ed
to the console to check it out. The backup was waiting on this message in
QSYSOPR to be answered:

Additional Message Information



Message ID . . . . . . : BRM148A

Date sent . . . . . . : 06/08/15 Time sent . . . . . . :
03:06:04


Message . . . . : No media of class ULTRIUM2 is available at location

TAPMLB01. (C G)



Cause . . . . . : No media of class ULTRIUM2 exists or is available for
the
operation to use at location TAPMLB01.

Recovery . . . : Do one of the following:

-- Add more media of this class to the media inventory, mount this
media
on device TAPMLB01, and type G to continue.

-- For virtual tapes, add volumes to any image catalog except
*NONE
and also add them to the BRMS inventory. Then type G to continue.

-- Type C to cancel the operation.

Possible choices for replying to message . . . . . . . . . . . . . . . :

G -- Continue with the operation.
C -- Cancel processing.
Reply . . . : C

As you can see I responded with C. This was on SAVSYS, the first save in
the control group. i expected to get several more as the next steps in the
control group would attempt various saves. To my surprise though, the
saves dutifully backed up to the tape that was installed. Everything is on
the tape except, obviously, the SAVSYS.

The tape was expired prior to this. The control group hasn't changed in
years. Why would it say there's no tape available and the very next step
run just fine? What am I missing?

Thanks.