I can not run Networker 8.1 and NMM 3.0 and Exchange 2013 provides just such an error:

42960:nsrsnap:Add APPLICATIONS:\Microsoft Exchange 2013 12345678 1

92347:nsrsnap:***************** Snapshot Management operation has started, logging to "C:\Program Files\EMC NetWorker\nsr\logs\nwsnap.raw" *****************10/22/13 16:33:48.753126 [nsr/save/nsrsnap.c 607] Calling nsrrm_host

10/22/13 16:33:48.784328 [nsr/save/nsrsnap.c 878] Calling get_pool_name..

52051:nsrsnap:Printing savecmd=nsrsnap_vss_save after parsing

79549:nsrsnap:[nsr/save/nsrsnap.c 1713] Invoking command: "nsrsnap_vss_save -A optype=pit  -A pit_recycle_interval=86400 -A "pit_backup_pool=Default" -A NSR_SAVE_FROM_SAVEGRP_NSRSNAP=Yes -A "NSR_SNAP_TYPE=vss"  -A "CIRCULAR_PROMOTION_POLICY=Circular"  -A "NSR_ALT_PATH=c:\tmp"  -A "NSR_EXCH2010_BACKUP=all"  -A "NSR_EXCH2010_DAG=dag.gmntest.local"  -A "NSR_EXCH_CHECK=yes"  -A "NSR_ESE_UTIL_SEQUENTIAL=False"  -A "NSR_ESE_UTIL_THROTTLE=False"  -A "NSR_CHECK_JET_ERRORS=all"  -A NSR_PARENT_JOBID=58  -b "Default" -c e1.gmntest.local -g "TestGRP" -LL -m e1.gmntest.local -s witness.gmntest.local -l full -q -W 78  -A snap_sessionid=1382448829 "10/22/13 16:33:49.954400 [nsr/save/nsrsnap.c 1730] Calling start_savecmd..

10/22/13 16:33:49.954400 [nsr/save/nsrsnap.c 1743] Calling snap_wait..

10/22/13 16:34:10.017380 [nsr/save/nsrsnap.c 1764] Calling parse_fs_logs_and_prefix..

86745:nsrsnap_vss_save:Version information for C:\Program Files\EMC NetWorker\nsr\bin\nsrsnap_vss_save.exe:

    Original file name: nsrsnap_vss_save.exe

    Version: 3.0.0.282

    Comments: NetWorker Module for Microsoft (x64)

50423:nsrsnap_vss_save:nsrsnap_vss_save: Unknown Application Information parameter: NSR_SAVE_FROM_SAVEGRP_NSRSNAP, may not be supported

50423:nsrsnap_vss_save:nsrsnap_vss_save: Unknown Application Information parameter: CIRCULAR_PROMOTION_POLICY, may not be supported

50423:nsrsnap_vss_save:nsrsnap_vss_save: Unknown Application Information parameter: NSR_SAVE_FROM_SAVEGRP_NSRSNAP, may not be supported

50411:nsrsnap_vss_save:nsrsnap_vss_save: Data mover host name not specified. Assuming local host: e1.gmntest.local

89199:nsrsnap_vss_save:nsrsnap_vss_save: Backup is level FULL. Set GLR compatibility to YES.

80276:nsrsnap_vss_save:NMM .. Error: Local retention of snapshots is not allowed unless the Exchange application information variable NSR_EXCH_RETAIN_SNAPSHOTS is present and contains the value "yes". Group: "TestGRP" Snapshot Policy: "1-1-Day-All" Snapshots Per Day: "1" Retain: "1" Backup Snapshots: "All" Level: "full".

80253:nsrsnap_vss_save:NMM.. Unable to continue backup.  "APPLICATIONS:\Microsoft Exchange 2013" snapshot policy requirements are not met.

Internal error.

68151 1382448848 2 0 0 7048 6836 0 e1.gmntest.local nsrsnap_vss_save NSR warning 39 nsrsnap_vss_save: Exiting with failure. 0

APPLICATIONS:\Microsoft Exchange 2013: Backup of [APPLICATIONS:\Microsoft Exchange 2013] failed