Residue 210 mapped to an entry

GROMACS version: 2022
GROMACS modification: Yes/No
Dear all,
I am facing the error while running the command gmx pdb2gm
Residue 210 named LYS of a molecule in the input file was mapped
to an entry in the topology database, but the atom CG used in
that entry is not found in the input file. Perhaps your atom
and/or residue naming needs to be fixed.
But at residue 210, there is no LYS, and ASN residue is found. I am not understanding why this is happening?