Nine allies, including Tuvalu, Nauru, Kiribati and Solomon Islands, said Taiwan should not have been excluded from the global meeting.
Taiwan is not a member of the United Nations and has been blocked by China from engaging in UN organisations and institutions.
The Taipei Times reported that Taiwan's government held various meetings on the sidelines of COP24, including with Tuvalu's prime minister Enele Sopoaga.
Taiwan's allies said it is making significant carbon reduction efforts in the energy, manufacturing, transportation and agricultural sectors.
