S0C4 when trying to create a dasd backuo to tape using IEHDASDR

Ok, I have an interresting issue:

I inilialized a tape using hetinit:

hetinit -d -i mvscatbk.het bkpcat hercules

then I mounted the tape on hercules:

devinit 400 tapes\mvscatbk.het

then I run this job on TK_MVS:

//BKMVSCAT     JOB     'BKUP MVSCAT',MSGLEVEL=(1,1),
//             CLASS=A,MSGCLASS=A                   
/*JOBPARM LINES=9999                                
//*                                                 
//DEL          EXEC    IDCAMS                       
//SYSIN        DD      *                            
  DEL  RWS01.BKUP.MVSCAT NSCR                       
  IF LASTCC = 8 THEN SET MAXCC = 0                  
//*                                                 
//S010         EXEC    DASDR,COND=(0,NE),           
//             T=BKPCAT,                            
//             D=MVSCAT                             
//SYSIN DD *                                        
   DUMP FROMDD=DISK,TODD=TAPE                       
/*                                                  
//                                                  

and this is the result:

                                                J E S 2   J O B   L O G


12.51.55 JOB   51  $HASP373 BKMVSCAT STARTED - INIT  1 - CLASS A - SYS RWS1
12.51.55 JOB   51  IEF403I BKMVSCAT - STARTED - TIME=12.51.55
12.51.55 JOB   51  IEFACTRT - Stepname  Procstep  Program   Retcode
12.51.55 JOB   51  BKMVSCAT   DEL       AMS       IDCAMS    RC= 0000
12.51.55 JOB   51  IEF450I BKMVSCAT STEP1 S010 - ABEND S0C4 U0000 - TIME=12.51.55
12.51.55 JOB   51  IEF234E K 400,BKPCAT,PVT,BKMVSCAT,STEP1
12.51.55 JOB   51  BKMVSCAT   S010      STEP1     IEHDASDR  AB S0C4
12.51.55 JOB   51  IEF404I BKMVSCAT - ENDED - TIME=12.51.55
12.51.55 JOB   51  $HASP395 BKMVSCAT ENDED

IEF236I ALLOC. FOR BKMVSCAT STEP1 S010
IEF237I JES2 ALLOCATED TO SYSPRINT
IEF237I 400  ALLOCATED TO TAPE
IEF237I 141  ALLOCATED TO SYS00016
IEF237I 1B1  ALLOCATED TO DISK
IEF237I JES2 ALLOCATED TO SYSIN
IEF472I BKMVSCAT STEP1 S010 - COMPLETION CODE - SYSTEM=0C4 USER=0000
IEF285I   JES2.JOB00051.SO0104                         SYSOUT
IEF287I   RWS01.BKUP.MVSCAT                            NOT CATLGD  7 *--------0
IEF287I   VOL SER NOS= BKPCAT.
IEF285I   SYS2.UCAT.RWS001                             KEPT          *--------0
IEF285I   VOL SER NOS= RWS001.
IEF285I   SYS10241.T125155.RA000.BKMVSCAT.R0000001     KEPT          *--------0
IEF285I   VOL SER NOS= MVSCAT.
IEF285I   JES2.JOB00051.SI0102                         SYSIN
IEF373I STEP /STEP1   / START 10241.1251
IEF374I STEP /STEP1   / STOP  10241.1251 CPU    0MIN 00.02SEC SRB    0MIN 00.00SEC VIRT    24K SYS   204K
************************************************************************************************************************************
*     2. Jobstep of job: BKMVSCAT    Stepname: STEP1       Program name: IEHDASDR   Executed on 29.08.10 from 12.51.55 to 12.51.55 *
*         elapsed time  00:00:00,04                      CPU-Identifier:  RWS1           Page-in:      0                           *
*             CPU time  00:00:00,02               Virtual Storage used:     24K         Page-out:      0                           *
*     I/O Operation                                                                                                                *
*     Number of records read via DD * or DD DATA:      1                                                                           *
*     DMY.......0 400.......0 141.......0 1B1.......0                                                              *
*                                          Charge for step (w/o SYSOUT):          0,03                                             *
*********************************************************************
 
What's puzzling is that I did the same thing 10 min earlier with another DASD..., and it worked.  I was eve able to restore the volume to another dasd.

Thanks

Roger