A complainant alleged that Health Canada had failed to identify all records responsive to a request under the Access to Information Act and ought to have also produced an index of all responsive records. The investigation showed that Health Canada had conducted a reasonable search for responsive records and there was no evidence of missing records. It was also determined that Health Canada’s refusal to provide the complainant with an index of all responsive records did not contravene its duty to assist obligations under subsection 4(2.1), as the creation of an index, with respect to this particular request, would have been unreasonable. The complaint is not well-founded.