Unable to switch to window ,fields are redundant in Child and parent window

Unable to switch to window ,fields are redundant in Child and parent window

Katalon unabe to switch to child window hence kataln unable to ind elements,what to do n this case.I have attached the application DOM
https://drive.google.com/open?id=0BwdO9vOfm1C1R3FPVXBRdkItNlJKcTJYdm8yaFhwN2RiTmJR

Just unzip 1.zip file and click User Screen in google chorme

what do you meant by “fields are redunant in Child and Parent windows”? From the DOM, I think it is a normal dialog and all the element should be located as usual.

Could you specify which element could not be located and the screenshot of the element property at Object Repository?