Oracle NCA Protocol Permission denied error

Hi,

I am facing isuue with Oracle NCA protocol while replaying the script in Vugen with 1 user.(Version 12.53)

I am getting below message - 

Action.c(147): Error: nca_button_set("102") failed, Object class cannot perform this operation.
The window currently in focus: "Forms".
The last popup/alert message received: "Forms - Permission denied, Username or Password Incorrect"

Any help is appreciated.