# Regulation (EU) No 640/2010 of the European Parliament and of the Council of 7 July 2010 establishing a catch documentation programme for bluefin tuna Thunnus thynnus and amending Council Regulation (EC) No 1984/2003, Division (2): Numbering

Extent: E+W+S+N.I.

Each licensing authority must develop unique numbering systems for catch documents using their ISO 2-alpha country code in combination with a number consisting of at least eight digits, of which at least two digits should indicate the year of catch.
Example: FR-09-123456 (where FR stands for France)
In the case of split lots or processed products, copies of the original catch document must be numbered by supplementing the number of the original catch documents with a 2-digit number.
Example: FR-09-123456-01, FR-09-123456-02, FR-09-123456-03, etc.
The numbering must be sequential and preferably printed. The serial numbers of blank catch documents issued shall be recorded according to the name of the recipient.

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Source: https://www.legislation.gov.uk/eur/2010/640/annex/IV/division/1/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2010-640/annex-IV/division-1/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.