def tags(self):
        """
        FEFF job parameters.

        Returns:
            Tags
        """
        if "RECIPROCAL" in self.config_dict:
            if self.small_system:
                self.config_dict["CIF"] = "{}.cif".format(
                    self.structure.formula.replace(" ", ""))
                self.config_dict["TARGET"] = self.atoms.center_index + 1
                self.config_dict["COREHOLE"] = "RPA"
                logger.warning("Setting COREHOLE = RPA for K-space calculation")
                if not self.config_dict.get("KMESH", None):
                    abc = self.structure.lattice.abc
                    mult = (self.nkpts * abc[0] * abc[1] * abc[2]) ** (1 / 3)
                    self.config_dict["KMESH"] = [int(round(mult / l)) for l in abc]
            else:
                logger.warning("Large system(>=14 atoms) or EXAFS calculation, \
                                removing K-space settings")
                del self.config_dict["RECIPROCAL"]
                self.config_dict.pop("CIF", None)
                self.config_dict.pop("TARGET", None)
                self.config_dict.pop("KMESH", None)
                self.config_dict.pop("STRFAC", None)

        return Tags(self.config_dict)