International organisations like the United Nations, the World Trade Organization and NATO have already adopted Türkiye following a formal request from the Turkish authorities.
There is no intention to amend, or expectation for industry to amend, certificates of origin, carnets, or invoices.
In most cases, it is expected that invoices and other commercial documents would use a 2-character country code anyway, which would reflect either name reference; in Turkey’s ( or should it be Turkiye’ s ) case this would be the identifier, ‘TR’.