NMDA Oracle RMAN backup failing with failed to create sequential file

rman target /
RMAN>  backup current controlfile;
 
Starting backup 

using target database control file instead of recovery catalog
allocated channel: ORA_SBT_TAPE_1
channel ORA_SBT_TAPE_1: SID=1206 instance=INSTANCE2 device type=SBT_TAPE
channel ORA_SBT_TAPE_1: NMDA Oracle v19.6.1.3
channel ORA_SBT_TAPE_1: starting full datafile backup set
channel ORA_SBT_TAPE_1: specifying datafile(s) in backup set
including current control file in backup set
channel ORA_SBT_TAPE_1: starting piece 1 at 22-DEC-23
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_SBT_TAPE_1 channel at MM/DD/YYY HH:MM:SS
ORA-19506: failed to create sequential file, name="name_nnnnnnn_1_1", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: non RMAN, but media manager or vendor specific failure, error text:
   The NMDA error message has been lost. Set NSR_DEBUG_LEVEL to a value greater than 0 and run NMDA.

CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' PARMS 'ENV=(NSR_SERVER=NetWorker-server,NSR_DATA_VOLUME_POOL=Pool1,NSR_GROUP=Group-name,NSR_CLIENT=Client-name,NSR_DEBUG_LEVEL=9,NSR_DPRINTF=TRUE)';

Replace the pool in the backup workflow/action/pool attribute to match the pool defined in the RMAN script. This change can be done from:

• NetWorker Web User Interface (NWUI)

• NetWorker Management Console (NMC)

NOTES:
1) The RMAN script does not have a default location. The script is saved to a location of the Oracle DBA's choosing.
2) By default, the RMAN log is saved to the directory where the RMAN command was run.