I'm receiving an error (and a rejected filing):  "Each student SSN that has a value of form 8863, line 21 must not be the same as that in another form 8863. 

I have three students who are eligible for credits and I've checked each entry in 8863 and they are all different SSN's and allocated properly. 

Anyone seen this before or have any ideas? Any help is always greatly appreciated. 

Steve Smith