error IND-517-01 Efile reject dependent SSN must not be the same as Primary in another

[JJV]

Looking for info here - may be identity theft of minor dependent.  What's the fastest way to find out if a return has been unknowingly filed for a dependent?  Called IRS ID Theft number, they said over 60 min wait.  Paper filewith the ID affadavitt?

[sjrcpa]

First, did you ask the client if the dependent filed their own return?

[JJV]

Yes, 18 y/o dependent son said he did not file a return in 2021 (has never filed).