New Zealand Football has appealed the disqualification of its under-23 team from the Oceania Olympic qualifying tournament for use of an ineligible player.
President Deryck Shaw said New Zealand lodged an appeal with the Oceania Football Confederation on Friday against both the process and the grounds under which its team was ejected from the tournament in Papua New Guinea.
Shaw said New Zealand Football is also reviewing internal processes and obtaining information "on the small number of players that are potentially affected" by eligibility questions.
But New Zealand media reports say as many as 16 players who have represented New Zealand in the past year at senior, U23 and U17 level do not meet FIFA's eligibility criteria.
New Zealand Football CEO Andy Martin said: "We are working at pace to complete a review of our internal processes and eligibility information on players.
"We are taking a conservative view, and have obtained information from FIFA about the process to apply for exemptions for the small number of players that are potentially affected and we are working with the players concerned to gather the necessary information.
"We intend to have this review and work programme complete in the next two weeks and our focus remains on giving our full support to our players, their families and our coaching and management teams during what has been a distressing time for them."