Finding out if the molecule or in file is bad.

I am running an MD simulation and I get

ERROR on proc 0: Out of range atoms - cannot compute PPPM (…/pppm.cpp:1927)

How can I get LAMMPS to tell me which atoms that are out of range?

And how can i find pppm.cpp:1927?

Best Jonathan

doc/Section_errors.html explains this message
(and all others). It also gives ideas on how
to fix it.