Message 4183I INVALID LOGICAL UNIT OUTONE SYS005 occurred while trying to mount a scratch tape for a backup.
We had a production payroll job that ran fine the other day but failed this morning with the following error:
F9 0009 4183I INVALID LOGICAL UNIT OUTONE SYS005
F9 0009 0V15I REQUEST FROM SYSTEM SERVICE ROUTINE
F9 0009 0S00I JOB VOUCHER2 CANCELED
This was generated by the following JCL:
// DLBL INONE,'PAYROLL.TRANS',,VSAM
// TLBL OUTONE,'PRODVSE.TRANS.BKUP'
// DLBL INTWO,'T8.PENSION',,VSAM,CAT=PRODTWO
// TLBL OUTTWO,'PRODVSE.T8.PENSION'
// EXEC IDCAMS,SIZE=AUTO
Customer solved the problem by setting DYNAMT=ON and received the proper assignment.
We were able to run in another partition without a problem and were planning to IPL this evening to fix the problem when I was able to reproduce the problem in our sandbox VSE by simply setting DYNAMT=OFF in the partition.
By setting DYNAMT=ON back on again we received the proper assignment. So somewhere in our production VSE system DYNAMT=OFF was issued in our F9 partition.