Form 8332 error

[Kea]

I just caught an error I made on a Form 8332. Client was custodial parent & releasing exemption to her ex. I checked the box that the form was for the taxpayer (in TaxWise). It got e-filed.

When doing my 2nd one in this software, I noticed that checking "taxpayer" was putting client's name in as "Non-Custodial" parent. (Silly me - I assumed the checkbox was for who was issuing the 8332 -- especially since the Non-Custodial Parent field links to the name on the return.)

So the form the client has has her name as Non-custodial, but she is also the one who signed it as Custodial.

Since it was in the return, I assumed (again) that it went in the e-file. I now see that it was supposed to be mailed to IRS with the 8453. She has already provided form to ex.

I can correct form to give to client & I can mail to IRS. But what if the ex already filed with the incorrect 8332? What if they caught the error / what if they didn't?

They are already not on speaking terms, so this could get ugly!