(4)The G-SII identification process should be based on comparable data and should take into account that institutions need clarity as to whether and in which amount a buffer requirement will apply to them, therefore, timelines and procedures for that process should be included in the methodology. However, since the identification of G-SIIs should be based on up-to-date data relating to the sample of large global banking groups some of which are authorised in third countries, the data needed will not be available earlier than the second half of each year. In order to enable institutions to comply with the requirements resulting from their status as a G-SII, the buffer requirement should take effect as of approximately one year following their identification as a G-SII.