(29)On the basis of an assessment of the resolvability of insurance or reinsurance undertakings, resolution authorities should have the power to require, either directly or indirectly through the supervisory authority, that insurance or reinsurance undertakings change their structure and organisation. Resolution authorities should also be able to take necessary but proportionate measures to reduce or remove any substantive impediments to the application of resolution tools and to ensure the resolvability of the entities concerned. Resolution authorities should assess the resolvability of insurance or reinsurance undertakings at the level of those undertakings where it is expected that, in accordance with the group resolution plan, resolution actions would be taken. The resolution authorities’ ability to request changes to the structure and organisation of an insurance or reinsurance undertaking, or to take measures to reduce or remove any material impediments to the application of resolution tools and to ensure the resolvability of the undertakings concerned, should not go beyond what is necessary to simplify the structure and operations of the insurance or reinsurance undertaking concerned in order to improve that undertaking’s resolvability.