5.5.3  Where an Athlete is included in an internatio nal Registered Testing Pool by the WSF and in a national Registered Testing  Pool by their National Anti -Doping Organisation , the National Anti-Doping Organisation  and the WSF shall agree between themselves which of them shall accept that Athlete's whereabo uts filings; in no case shall an Athlete be required to m ake whereabouts filings to more than one of them.