Submit Form 4419, Application for Filing Information Returns Electronically (FIRE), to request authorization to file Forms 1097, 1098 Series, 1099 Series, 3921, 3922, 5498 Series, 8027, 8955-SSA, 1042-S, and W-2G electronically through the Filing Information Returns Electronically (FIRE) System. Submit Form 4419 by November 1st of the year before information return(s) are due to ensure you are ready to electronically file. Form 4419 received after November 1st may not be processed in time to meet your electronic filing needs. Allow 45 days for processing. Form 4419 is subject to review before the approval to transmit electronically is granted and may require additional documentation at the request of the Internal Revenue Service (IRS). If your application is approved, a Transmitter Control Code (TCC) will be assigned to your business and sent by U.S. Postal Service to the mailing address on Form 4419. If the electronically transmitted documents are determined to be invalid, the IRS has the authority to revoke the TCC and terminate the release of files.
Refer to Part B. Sec. 1, Application for Filing Information Returns Electronically.
Here is a link to Form 4419