def is_missing_atom_map(molecule):
    """
    Checks if any atom in molecule is missing a map index. If even only one atom is missing a map index will return True
    Parameters
    ----------
    molecule: oechem.OEMOl

    Returns
    -------
    bool

    """
    MISSING_ATOM_MAP = False
    for atom in molecule.GetAtoms():
            if atom.GetMapIdx() == 0:
                MISSING_ATOM_MAP = True
                return MISSING_ATOM_MAP
    return MISSING_ATOM_MAP