In particular, it is desirable that a group support regime operate on sound foundations based on the existence of harmonised and adequately funded insurance guarantee schemes; a harmonised and legally binding framework for competent authorities, central banks and ministries of finance concerning crisis management, resolution and fiscal burden-sharing which aligns supervisory powers and fiscal responsibilities; a legally binding framework for the mediation of supervisory disputes; a harmonised framework on early intervention; and a harmonised framework on asset transferability, insolvency and winding-up procedures which eliminates the relevant national company or corporate law barriers to asset transferability. In its report, the Commission should also take into account the behaviour of diversification effects over time and risk associated with being part of a group, practices in centralised group risk management, functioning of group internal models as well as supervision of intra-group transactions and risk concentrations.