File 1095 Electronically: IRS submission EIN Errors and Solutions
  1. EIN Error
Some users reported this error when submitting ACA forms for testing.
 
Reason: You cannot use your company EIN for testing. IRS has special requirements for testing.  
Solution: Follow our guide to testing. 
We have prepared all data for you. You can download the test data from our site. You just need to enter the your own TCC and leave all the other data as it is.
How to generate IRS ACA test case scenarios for 1095 E-filing 
https://www.halfpricesoft.com/aca-1095/how-to-generate-test-case-scenarios.asp