Valadating a certificate of origin
However, not all exporters need a certificate of origin, this will depend on the destination of the goods, their nature, and it can also depend on the financial institution involved in the export operation.
In order to be valid, the certificate of origin must be signed by the exporter, and countersigned by the local chamber of commerce.
This detail should be entered on the line indicated by "Place and date" and "Signature of the applicant".
Later on, in 1999, the Revised Kyoto Convention added an Annex on the Simplification and Harmonization of Customs Procedures to further facilitate the transfer of legal documents in international trade.
In the event the products were manufactured in two or more countries, origin is obtained in the country where the last substantial economically justified working or processing is carried out.
An often used practice is that if more than 50% of the cost of producing the goods originates from one country, the "national content" is more than 50%, then, that country is acceptable as the country of origin.
Thus due to the widespread network of the chamber of commerce community, in most countries, chambers of commerce were seen as these organizations allowed to issue certificates of origin.
As such, seen as “competent authorities”, chambers began to more widely issue non-preferential certificates of origin.