So you have generated your IRP5 electronic certificates and your file has failed the E@syile reason due to the below (and above) reason:

What this message essentially means is that not all of the lines in your import file has been created correctly due to a special character that couldn't be converted correctly.  The best way to get a resolution for this matter is to email the IRP5 file that you are importing along with a screenshot of the error message that you are experiencing to [email protected] 

We will be able to tell you what field for which employee is incorrect and how to fix it.