Sharepoint 2013 backup getting failed

Hi,

We have twon node deployement of sharepoint servers.

The database server backup is getting completed,

However sharepoint application backup is getting failed, Bwlow is the configuration of backup,

backup command : nsrsnap_vss_save

Application Information : NSR_SNAP_TYPE=vss

Saveset : APPLICATIONS:\Microsoft Office SharePoint Services

Snapshot Policy : Rolloveronly

Backup Error is as as below,

APPLICATIONS:\Microsoft Office SharePoint Services: Backup of [APPLICATIONS:\Microsoft Office SharePoint Services] failed

own Application Information parameter: NSR_SAVE_FROM_SAVEGRP_NSRSNAP, may not be supported

102345:nsrsnap_vss_save:Data mover host name not specified. Assuming local host: kchjsssp2013.kpit.com

102338:nsrsnap_vss_save:Backup is level FULL. Set GLR compatibility to YES.

67770:nsrsnap_vss_save:NMM .. Snapshot rollover policy. Group: "KCHJSSSP2013" Snapshot Policy: "RolloverOnly" Rollover: "All".

47363:nsrsnap_vss_save: nsrpsd service is running on KCHJSSSP2013.

C:\inetpub\wwwroot\wss\VirtualDirectories\15261\*

C:\inetpub\wwwroot\wss\VirtualDirectories\1000\*

C:\inetpub\wwwroot\wss\VirtualDirectories\1001\*

C:\inetpub\wwwroot\wss\VirtualDirectories\80\*

C:\inetpub\wwwroot\wss\VirtualDirectories\27101\*

82624:nsrsnap_vss_save:Save set name APPLICATIONS:\Microsoft Office SharePoint Services is valid.

63778:nsrsnap_vss_save:NMM .. ERROR..Writer SharePoint Services Writer with local dependent writer id { comp IndexComponentGroup_ffecd93c-ecd0-40a3-bee2-f0b97a62801c cannot be found. CONTINUE PROCESSING.

37959:nsrsnap_vss_save:The object identifier does not represent a valid object.

.

63335:nsrsnap_vss_save:NMM backup failed to complete successfully.

Internal error.

SYSTEM COMPONENTS:\: failed

102333 1407777106 3 0 0 6384 10132 0 kchjsssp2013.kpit.com nsrsnap_vss_save NSR error 21 Exiting with failure. 0