Error Message: Electronic Billing (e-billing), Exception Illegal characters in path

Error:  Exception__Illegal characters in path, Error generating image communication Files 

File number is as follows:  8282->002 

The File name is formatted with a character that is not recognized as valid for e-billing. 

E-billing file names must be numbers only or have one dash only in the character string. 

To e-bill this file change the file number to either: 

8282-002 

or 

8282002