Hi! We are trying to upload our ACA file to the IRS site and we're receiving the error message below.
ACA Transmission File Upload
1 error has occurred. See below for more information. If the problem continues, please contact us.
[TPE1201] Our system has detected a potential threat in the Form file and it cannot be transmitted. This may be due to malformed XML. Please review the XML standards outlined in Section 3 of the AIR Submission Composition and Reference Guide located here, correct any issues on the Form and try again.
Has anyone encountered this error message? Do you have any pointers on what we can do to fix the error? Thanks in advance!
