Division 3 The structure of the transponder code shall be in accordance with ISO standard 11784 and the descriptions set out in the following table:
United Kingdom
| Bit(s) No | No of digits | No of combinations | Description |
|---|---|---|---|
| 1 | 1 | 2 | This bit indicates whether the identifier is used for animal identification or not. In all animal applications this bit shall be ‘1’ |
| 2-4 | 1 | 8 | Retagging counter (0 to 7). |
| 5-9 | 2 | 32 | User Information field. This bit shall contain ‘04’ codifying the CN-code for sheep and goats in accordance with Chapter 1, Section I, Part II of the Annex to Council Regulation (EEC) No 2658/87f1. |
| 10-15 | 2 | 64 | Empty — All zeros (reserved zone for future applications). |
| 16 | 1 | 2 | This bit indicates the presence or not of a data block (for the use in animals this bit shall be ‘0’ = no data block). |
| 17-26 | 4 | 1 024 | Country code as defined in point (a) of Chapter 1 |
| 27-64 | 12 | 274 877 906 944 | National identification code as defined in point (b) of Chapter 1. If the national identification code is less than 12 digits, the space between the national identification code and the country code shall be completed with zeros. |