The period necessary for the repayment of deposits should take into account cases where schemes have difficulty in determining the amount of repayment and the rights of the depositor, in particular if deposits arise from residential housing transactions or certain life events, if a depositor is not absolutely entitled to the sums held on an account, if the deposit is the subject of a legal dispute or competing claims to the sums held on the account or if the deposit is the subject of economic sanctions imposed by national governments or international bodies.