Unable to file second t4 error code.

[steventhorbeland]

This is the error I am getting. I am trying to file a second t4 I worked two jobs last year. The first I was able to file as they uploaded it digitally. The second I had to wait till a few days ago for it to come in the mail.  As I am trying to file this one I am getting the error, Message from the CRA:

CRA Result Code: NETFILE submission was already confirmed. Not letting this second submission pass through. Do a REFILE.