Just received this error:
The program did not successfully transmit this tax filing. The filing failed pre-submission validation.
Failed transmission on January 17, 2021
Validation Failure: Error 709: Duplicate Social Security Number/Employer Identification Number - The Lacerte Electronic Filing Center is currently processing a filing with this Social Security Number or Employer Identification Number. You cannot e-file this filing again at this time.
Is there away to track where the duplicate filing occurred?
Did you possibly file the return, when you meant to file the extension? That would mean you should now file an amended return, but you need to confirm what was in the return you incorrectly filed when you meant to efile the extension.