# Council Regulation (EC) No 21/2004 of 17 December 2003 establishing a system for the identification and registration of ovine and caprine animals and amending Regulation (EC) No 1782/2003 and Directives 92/102/EEC and 64/432/EEC, Division 7: The identification method referred to in Article 4(3), shall be as follows:

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

(a)the animals must be identified by an eartag approved by the competent authority, applied to one ear;
(b)the eartag must be of non-degradable material, tamper-proof and easy to read; it must be non-reusable and must bear only non-removable codes;
(c)the eartag must contain at least the following information:
(i)the two-letter country code(1); and
(ii)the identification code of the holding of birth or an individual animal code from which the holding of birth can be ... identified in accordance with this point intended to be kept beyond the age of 12 months or intended for export to a Member State or export to third countries, must be identified in accordance with points 1 to 4 to ensure complete traceability of each animal to the holding of birth.

---
Source: https://www.legislation.gov.uk/eur/2004/21/annex/division/A/division/7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2004-21/annex/division-A/division-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.