http://www.legislation.gov.uk/id/eur/2017/582

Article 1Arrangements to facilitate the transfer of information

1.

A trading venue shall detail in its rules the information it needs from counterparties to a cleared derivative transaction in order to submit that transaction to a CCP for clearing, and the format in which that information shall be provided.

2.

A CCP shall detail in its rules the information it needs from counterparties to a cleared derivative transaction and from trading venues in order to clear that transaction, and the format in which that information shall be provided.