Paragraph 6.7(1)(c) of the Instrument requires the custodian of an investment fund to make any changes periodically that may be necessary to ensure that the custodian and sub-custodian agreements comply with Part 6, and that there is no sub- custodian of the investment fund that does not satisfy the applicable requirements of section s 6.2 or 6.3. The Canadian securities regulatory authorities note that necessary changes to ensure this compliance could include a change of sub-custodian.