(39)CSDs, including those authorised to provide banking-type ancillary services, and designated credit institutions should cover relevant risks in their risk management and prudential frameworks. Tools to cover those risks should include maintaining sufficient qualifying liquid resources in all relevant currencies and ensuring that stress scenarios are sufficiently strong. CSDs should also ensure that corresponding liquidity risks are managed and covered by highly reliable funding arrangements with creditworthy institutions; those arrangements should be committed or have similar reliability. CSDs which provide banking-type ancillary services should also have specific rules and procedures to tackle potential credit, liquidity and concentration risks stemming from the provision of those services. EBA should develop draft regulatory technical standards to update the existing regulatory technical standards in order to take into account those changes to prudential requirements. That would enable the Commission to make any necessary amendments with a view to clarifying the requirements set out in such regulatory technical standards, such as those related to the management of potential liquidity shortfalls.