Here's verbatim message :

The program did not successfully transmit this tax filing.  The filing failed pre-submission validation
Failed Transmission on 02/01/20 :
1802
Validation Failure: Error 703:    Duplicate Social Security Number: A tax return with the same Social Security number has already been submitted - in other words, it appears you're trying to e-file the same return twice. If you need to change this return, you'll need to file an amended return on paper, by mail.