Article 30 Yellow link
United Kingdom
Where manual verification of different identities has not yet taken place, a link between data from two or more EU information systems shall be classified as yellow in any of the following cases:
the linked data share the same biometric data but have similar or different identity data;
the linked data have different identity data but share the same travel document data, and at least one of the EU information systems does not contain biometric data on the person concerned;
the linked data share the same identity data but have different biometric data;
the linked data have similar or different identity data, and share the same travel document data, but have different biometric data.
Where a link is classified as yellow in accordance with paragraph 1, the procedure laid down in Article 29 applies.