Rebuild CA-Disk backup tape that had not yet been re-used

Document ID : KB000117288
Last Modified Date : 10/10/2018
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Question:
Our customer tried to rebuild CA-Disk backup tape that had not yet been re-used:
-   changed Status, Owner, Expiration date, Return to SCRATCH pool in the RMM panels like he has done many times before
-   ran the CA-Disk rebuild job with user abend
-   even tried to change Owner from STXZ001 to STMV001 with same result 

What can be the reason ?
My storage colleague told me the following:
"Look's like he tried to make a scratch tape to master, but is was already 'expired' by VTS.
Therefore this tape lost for the system.
Would be better to try to use tape(s) which was/were not released earlier. "

Is it all what can the customer do, or can you see more ?
COPY ST of the related volume is REQR - see below. Does it matter ?

I attached the job output

Few information, what we displayed:

D SMS,VOLUME(YE7537)                                                
F OAM,D,VOL,YE7537,L=T827592-Z                              
CBR1180I OAM tape volume status: 235                                
VOLUME  MEDIA     STORAGE   LIBRARY   USE  W  C  SOFTWARE  LIBRARY  
        TYPE      GROUP     NAME      ATR  P  P  ERR STAT  CATEGORY 
YE7537  MEDIA2    VTS2SAML  IBMVTS    P    N  N  REJTMS    PRIVATE  
------------------------------------------------------------------- 
RECORDING TECH:     36 TRACK         COMPACTION:         YES        
SPECIAL ATTRIBUTE:  NONE             ENTER/EJECT DATE:   2014-02-03 
CREATION DATE:      2014-02-03       EXPIRATION DATE:    1999-12-31 
LAST MOUNTED DATE:  2018-07-24       LAST WRITTEN DATE:  2018-07-24 
SHELF LOCATION:                                                     
OWNER: STXZ001                                                      
LM SG: VTS2SAML  LM SC:           LM MC:           LM DC:           
LM CATEGORY: 003F                                                   

-LI REQ,IBMVTS,LVOL,YE7537                                             
 CBR1020I Processing LIBRARY command: REQ,IBMVTS,LVOL,YE7537.          
 CBR1280I Library IBMVTS request. 777                                  
 Keywords: LVOL,YE7537                                                 
 ----------------------------------------------------------------------
 LOGICAL VOLUME INFORMATION V4 .1                                      
  LOGICAL VOLUME:               YE7537                                 
  MEDIA TYPE:                   ECST                                   
  COMPRESSED SIZE (MB):         0                                      
  MAXIMUM VOLUME CAPACITY (MB): 4000                                   
  CURRENT OWNER:                Munkka                                 
  MOUNTED LIBRARY:                                                     
  MOUNTED VNODE:                                                       
  MOUNTED DEVICE:                                                      
  TVC LIBRARY:                  Munkka                                 
  MOUNT STATE:                                                         
  CACHE PREFERENCE:             PG1                                    
  CATEGORY:                     003F                                   
  LAST MOUNTED (UTC):           2018-10-04 06:34:56                    
  LAST MODIFIED (UTC):          2018-07-24 16:28:53                    
  LAST MODIFIED VNODE:          00                                     
  LAST MODIFIED DEVICE:         00D3                                   
  TOTAL REQUIRED COPIES:        2                                      
  KNOWN CONSISTENT COPIES:      0                                      
  KNOWN REMOVED COPIES:         0                                      
  IMMEDIATE-DEFERRED:           N                                      
  DELETE EXPIRED:               Y
RECONCILIATION REQUIRED:      N                                       
   LWORM VOLUME:                 N                                       
   FLASH COPY:                   NOT ACTIVE                              
  ---------------------------------------------------------------------- 
    LIBRARY  RQ CACHE PRI PVOL  SEC PVOL  COPY ST  COPY Q  COPY CP  REM  
     Munkka   N     N   ------    ------     REQR       -      DEF    N  
   Suvilaht   N     N   ------    ------     REQR       -      DEF    N  
  ---------------------------------------------------------------------- 
    LIBRARY  CP                                                          
     Munkka   1                                                          
   Suvilaht   1
Answer:
REBUILD failed with 
PET202I USER ABEND(U0100) AT PSW(078D1000 800245B2) caused by an empty tape 

EDG4026I VOLUME YE7537 REJECTED. FIRST FILE HDR1 NAME 00000000000000000 DOES NOT MATCH RECORDED NAME 
EDG4026I CONT:- STMW001.BACKUP.PSTAPE.DMSN.S2018205.T200008 
EDG4006E VOLUME YE7537 ON 80D8 REJECTED FOR USE BY DMS12RB1, REBUILD, ARCHIVES, OPEN REQUEST FAILED BY DFSMSrmm 
IEC145I 413-08,IFG0194K,DMS12RB1,REBUILD,ARCHIVES,80D8,, 
STMW001.BACKUP.PSTAPE.DMSN.S2018205.T200008 

This confirms, that contents of the tape is lost as it was already deleted from the VTS. 

In CA DISK you can create an optional copy for a backup/archive tape. However, this copy tape is scratched at the same time as the primary tape. So just in case such a tape was created, this is probably lost as well in the meantime. 
If you still have an old CA DISK LISTV report for example, you can check if there was a COPY (see the COPY KEY field). 
If yes, you might try to reactivate this one and see if REBUILD works.