Please help to fix the below error message -
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) INF - BACKUP STARTED USING
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) Microsoft SQL Server 2012 (SP1) - 11.0.3000.0 (X64)
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) Oct 19 2012 13:38:57
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) Copyright (c) Microsoft Corporation
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) Standard Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: ) (Hypervisor)
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) Batch = C:\Program Files\Veritas\NetBackup\DbExt\MsSql\Daily_Differential.bch, Op# = 5
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) INF - Using backup image <SQL Server Name>.MSSQL7.<SQL Cluster Name>\VCENTER.inc.VUM_DB.~.7.001of001.20150526211827..C
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) INF - backup database "VUM_DB" to VIRTUAL_DEVICE='VNBU0-4840-2896-1432642709' with stats = 10, blocksize = 65536, maxtransfersize = 4194304, buffercount = 2, differential
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) INF - Number of stripes: 1, Number of buffers per stripe 2.
5/26/2015 9:18:29 PM - Info dbclient(pid=4840) INF - Created VDI object for SQL Server instance <VCENTER>. Connection timeout is <300> seconds.
5/26/2015 9:18:37 PM - Info dbclient(pid=4840) INF - Thread has been closed for stripe #0
5/26/2015 9:18:41 PM - Info dbclient(pid=4840) INF - OPERATION #5 of batch C:\Program Files\Veritas\NetBackup\DbExt\MsSql\Daily_Differential.bch SUCCEEDED with STATUS 0 (0 is normal). Elapsed time = 14(0) seconds
5/26/2015 9:18:43 PM - Info dbclient(pid=4840) INF - Results of executing <C:\Program Files\Veritas\NetBackup\DbExt\MsSql\Daily_Differential.bch>:
5/26/2015 9:18:43 PM - Info dbclient(pid=4840) <4> operations succeeded. <1> operations failed.
5/26/2015 9:18:43 PM - Info dbclient(pid=4840) INF - The following object(s) were not backed up successfully.
5/26/2015 9:18:43 PM - Info dbclient(pid=4840) INF - master
5/26/2015 9:19:03 PM - Error bpbrm(pid=2204) from client <SQL Cluster Name>: ERR - command failed: the requested operation was partially successful (1)
5/26/2015 9:19:03 PM - Error bpbrm(pid=2204) from client <SQL Cluster Name>: ERR - bphdb exit status = 1: the requested operation was partially successful
5/26/2015 9:19:03 PM - Info bpbrm(pid=2204) validating image for client <SQL Cluster Name>
5/26/2015 9:19:03 PM - end writing
5/26/2015 9:19:04 PM - Info bphdb(pid=1192) done. status: 1: the requested operation was partially successful
the requested operation was partially successful(1)
The job was successfully completed, but some files may have been
busy or inaccessible. See the problems report or the client's logs for more details.