Backups to Data Domain storage failing after NetBackup catalog recovery

Problem

Backups fail to DataDomain storage unit after disaster recovery of the NetBackup master server

Error Message

NetBackup error received when running command:   
Install_path\Veritas\Volmgr\bin>tpconfig -update -storage_server <server> -stype DataDomain 
Invalid server information for type DataDomain server <server>.
Authorization failed for OpenStorage server  <server>
 

NetBackup OID 222 log shows "invalid arguments are passed"

DataDomain debug/ddfs.info log shows
INFO:  ddfs_ost_ifgroup_get_conn:  Received get ifgroup connections req
ost-<xxx.xxx.xxx.xx-64735>:  plugin ERROR: 
ddcl_ost_get_server_property failed unrecoverable rpc failure

Cause

After NetBackup catalog recovery, the latest version of the OST  plugin was installed on the Master server; 

version 2.4.1.0-289644.

Solution

Uninstalled newer plugin, and reverted to the OST plugin 2.3.1.0-223945 that was used in the original Master server configuration prior to the server crash and rebuild.

Applies To

Windows Server 2008 R2
NetBackup 7.1.0.3
OST plugin version 2.4.1.0-289644
DataDomain OS version 4.9.1.4.2132347