Hello Udayakumar,

such a behavior always occurs when you attempt to duplicate
a project to a connected network drive on the partner server.
When duplicating, after copying the project, the computer name
of the partner server is read from the setting
"Store duplicated project for redundancy partner at" in the
Project Duplicator and inserted in the copied WinCC project.
For this reason, in this setting you must always enter the UNC path
of the partner server (for example: "\\Server2\Projects\<Projectname>.mcp).

see the FAQ:
"When duplicating a project, why do you get the message entitled "Microsoft SQL Server Login"
indicating that "Access to the selected database is denied"?"

https://support.industry.siemens.com/cs/de/de/view/109743696

Regards

Georg Berghof