Hyper-V snapshots (avhd or avhdx files) and status code 1

If a snapshot of the virtual machine (avhd or avhdx file) is created while a NetBackup backup of the virtual machine is in progress, the backup may be only partially successful. A message similar to the following appears in the bpbkar log:

5:02:54Hyper-V snapshot.570 PM: [10948.8980] <2> tar_base::V_vTarMsgW: INF - VxMS
Error message 1 = translate_to_virtual_extent: ERROR Unable to locate MAP file = \\?\
GLOBALROOT\Device\HarddiskVolumeShadowCopy89\VM1\testvm2.veritas.com\TestVM1_diffVM1k
_8275A265-BD90-4E61-94C8-C347B7228E95.avhd

Retry the backup.