Federal return rejected - dependent error

[SylviaE]

Hello

We are trying to figure out why our federal return has been rejected, the error message is the following:

"This return has been rejected by the IRS because a dependent on this tax return, has filed their own tax return without indicating they would be claimed as a dependent."

We already filed dependents return and upon checking I can see we actually selected option 3: Claimed as a dependent.

Is there anything else that we could be missing? What could cause this rejection?

Many thanks

[IRonMaN]

More than one dependent and someone else filed a fraudulent return using their Social Security number?