(6)Clearing houses and clearing services providers established in Brazil have to be authorised by the BCB to provide clearing services. When considering authorisation as a clearing house or as a provider of clearing services, the BCB must take into account the soundness, the normal functioning and the improvement of the Brazilian payments system. The BCB may also specify ‘such conditions as it considers appropriate’ before granting such authorisation or afterwards, based on financial system stability, risk and efficiency of clearing houses and clearing service providers. Clearing houses that operate a systemically important system creating risks to the strength and to the smooth functioning of the Brazilian financial system, which is to be determined by the BCB depending on the clearing systems' volume and nature, may be subject to different rules than the rest of clearing houses and clearing service providers.