Error message appears when you remove a trusted master server without updating the trust
After you upgrade to NetBackup 8.1, if you remove a trusted master server without updating the trust, the nbseccmd command displays the following error message:
User authentication failed. User name, domain, password or token is incorrect(5601).
Workaround: The error message is inaccurate. You must update the trust and then remove the trusted master server. For more information, see the NetBackup Deduplication Guide.