Recommendation 20 Provides three character alphabetic and alphanumeric codes for representing units of measurement for length, area, volume/capacity, mass (weight), time, and other quantities used in international trade. The codes are intended for use in manual and/or automated systems for the exchange of information between participants in international trade.

Facilitates use of Recommendation 20. The code list is presented in three separate annexes:

Annex I – Code elements listed by quantity category; Annex II – Code elements listed by unit of measure name; and Annex III – Code elements listed by common code.

Data Source

Source of information is from the UNECE website: http://www.unece.org/ro/tradewelcome/un-centre-for-trade-facilitation-and-e-business-uncefact/outputs/cefactrecommendationsrec-index/code-list-recommendations.html

Requesting a Change (DMR - Data Maintance Request)

Change requests should be made by raising an issue in github and completing the template, these changes will then be considered and follow the below process.

Recommendation No. 20 is maintained on behalf of UN/CEFACT by the UN/CEFACT Information Content Management Group (ICG). Proposals for updating this Recommendation should be addressed to the Global Trade Solutions Section, United Nations Economic Commission for Europe, Palais des Nations, CH-1211 Geneva 10, Switzerland or by email (cefact@unece.org).


This data is made available under the Public Domain Dedication and License version v1.0 whose full text can be found at http://opendatacommons.org/licenses/pddl/ - See more at: http://opendatacommons.org/guide/#sthash.97PSVxmh.dpuf

  • http://www.unece.org/ro/tradewelcome/un-centre-for-trade-facilitation-and-e-business-uncefact/outputs/cefactrecommendationsrec-index/code-list-recommendations.html