Eror in Data file

Hi Dear LAMMPS users

I have written a data file that describes an aqueous solvent of NACL as you see in the attached file. But when I ues read_data in LAMMPS, this message appears that:

Unknown identifier in data file: 6578 0 4 1 34.667 13.502 9.531

what is wrong in this data file?

Thanks a lot for your advice

M.Rezaei (118 KB)

Hi Dear Majid

You must put only one blank line after “Atoms”.