(8)Pursuant to Circular 3057, clearing houses and clearing service providers must adopt internal rules and procedures ensuring compliance with all relevant requirements and containing all the relevant aspects related to its function, including the safeguards to manage credit, liquidity and operational risk. Those internal rules and procedures are submitted to, and firstly assessed by, the BCB in the authorisation procedure. In addition, material changes to the internal rules and procedures have to also be approved by the BCB. Any other non-material changes to internal rules and procedures must be communicated to the BCB before 30 days after the changes have been made, and the BCB can oppose them.