AS/400 - Backup warning

It has 7 days, we do not obtain to effect backup
of the data in the AS/400 ( I - series / V4R4) , the message that appears is
this below, what it could be?

Select one of the following:

   Save Data
      1. Files
      2. Libraries
      3. Documents and folders
      4. Programs
      5. Other objects
      6. Changed objects only
      7. Licensed programs
      8. Security data
      9. Storage
     10. Configuration
     11. Objects in directories


More...
 Selection or command
 ===> 2

 F3=Exit   F4=Prompt   F9=Retrieve   F12=Cancel   F13=Information Assistant
 F16=AS/400 Main menu
 Save or restore operation ended unsuccessfully.



 Message ID . . . . . . :   CPF3794
 Date sent  . . . . . . :   30/10/03      Time sent  . . . . . . :
14:47:38

 Message . . . . :   Save or restore operation ended unsuccessfully.

 Cause . . . . . :   The save or restore operation has ended unsuccessfully
   because a data management error has occurred.
 Recovery  . . . :   Press F10 or use the Display Job Log (DSPJOBLOG)
command
   to see the previously listed message CPF5101.  Message CPF5101 may refer
to
   override commands, but overrides do not apply to a save or restore
   operation.  Correct any errors and try the request again.
     If the error occurred when the *ALLUSR, *IBM, or *NONSYS value was
   specified on the LIB parameter on a Save Library (SAVLIB) command, you
can
   specify a value for the STRLIB parameter on the SAVLIB command to save
the
   remaining libraries.
     If the error occurred when the *ALLUSR, *IBM, or *NONSYS value was

   specified on the SAVLIB parameter on a Restore Library (RSTLIB) command,
you
   can specify a value for the STRLIB parameter on the RSTLIB command to
   restore the remaining libraries.

Bottom
 Press Enter to continue.
F1=Help   F3=Exit   F6=Print      F9=Display message details
 F10=Display messages in job log   F12=Cancel   F21=Select assistance level


Job . . :   QPADEV0004    User . . :   SOBRAL        Number . . . :   581866

 3>> go save
     Volume TAP003 on device TAP01 is density *QIC2GB.
     Cannot allocate object for file DAMW01 in AGATADAT.
     FILE DAMW01 in AGATADAT not saved.
     Cannot allocate object for file DAMW02 in AGATADAT.
     FILE DAMW02 in AGATADAT not saved.
     Damage found on file J0IMP0502 in library AGATADAT.
     FILE J0IMP0502 in AGATADAT not saved.
     Error on device TAP01.
     System object TAP01 partially damaged. Internal dump ID . Error class
0,
       device number X'0000'.
     Condition of source/sink object TAP01 not valid.
     Processing not complete for volume TAP003 on device TAP01.
     Save and restore file on media is not complete.
     Save or restore operation ended unsuccessfully.
            Bottom
 Press Enter to continue.
 F3=Exit   F5=Refresh   F12=Cancel   F17=Top   F18=Bottom