VM backups failing with vCenter login errors

VM backups that are using rules or tags are failing.
Regular backups complete - selected using policy

Logs show the following error:

Action backup vmware-vproxy 'backup' has initialized as 'vproxysave job' with job id 224276
libCURL SSL support is Enabled.
Inventory session status returned with a failure. Error: 'Failed to load inventory from 'VCenter_server.FQN.com': ServerFaultCode: Cannot complete login due to an incorrect user name or password.'.

And:

NWSERVERNAME nsrdisp_nwbg NSR critical Inventory session status returned with a failure. Error: 'Failed to load inventory from 'VCENTER_NAME': ServerFaultCode: Cannot complete login due to an incorrect user name or password.'.
lNWSERVERNAME nsrdisp_nwbg NSR notice
Reading the XML from RAP without running nsrvim again

The user, or password, or both were changed for VM Backup.

The nsrvisd is using the password.
The change was never reflected in the nsrvisd inventory process.

Review the logs in:
/nsr/vproxy/logs/nsrvisd
Or
/opt/nsr/vproxy/logs/nsrvisd

The log reflects the old user - password should be encrypted.

Resource Definition: {"Config":{"SessionId":"92-23993-9966cdbbd1","LogTag":"@(#) Build number: 41","LogLevel":"INFO","IdleTimeout":0,"AcceptedLanguage":"","VimServer":{"HostName":"VCENTER_SERVER","TcpPort":443,"UserName":"administrator@vsphere.local","UserPassword":"********","ThumbPrint":"","HypervisorMode":"vSphere"},"RefreshInventory":10},"Actions":{"ChangeSession":"/api/v1/InventorySessions/92fba-7a3a-48eb-84-e706cdbbd1","DeleteSession":"/api/v1/InventorySessions/92fbeef3a-48eb-84a6-70736cdbbd1","CancelActivity":"/api/v1/InventorySessions/92fbeefa-7a3a-48eb-84a6-e70736cdbbd1/activity","GetSession":"/api/v1/InventorySessions/92fbe

This is an issue, Dell engineering investigation is under progress.

Workaround is clear the state file - InventorySessions.gob

The state file can be located under.
/nsr/vproxy/logs/nsrvisd/InventorySessions.gob
OR
/opt/nsr/vproxy/logs/nsrvisd/InventorySessions.gob

Rename InventorySessions.gob.
mv InventorySessions.gob InventorySessions.gob_old

Stop nsrvisd - using kill.

ps -eaf | grep nsrvisd
kill <pid>

NSRVISD is restarted.
Verify it did restart:

ps -eaf | grep nsrvisd