I have recently tried to modify the logon screen on my portals but unfortunately I was got struck. I have changed the files
1.com.sap.runtime.logon.par(in portal file system)
2.authschemes.xml(in visual administrator).
Now the problem is My portal Login page doesn't appear ,instread it throws the below error
503 Service Unavailable
Servlet [prt] will be unavailable for undefined time.
Details: javax.servlet.UnavailableException: Initialization of Dispatcher failed
Exception id: [0016D30FFBDC006D0000002B00000F2000044318BC74F863]
Even I tried with restoring the above 2 files but I found no change.
Is there any way to restore the portal page again?
Thanks for your Reply and Appriciate the time.