Bulgaria’s carbon credit trading ability has been reinstated by the UN Compliance Committee, following the revocation of its trading rights in June 2010 for improper reporting under the Kyoto Protocol. In August 2010, Bulgaria presented a report detailing the changes made for improvement. However, this was not considered sufficient to permit reinstatement. Since then, Bulgaria submitted numerous proposals and action plans for reinstatement. On 4 February 2011, it was agreed that Bulgaria has proven it has an effective greenhouse gas inventory system in place, prompting the removal of the ban.