Banks must test on a regular basis, and at least annually, the ability to use its source of collateral in repo operations, to ensure its capability of using the securities to obtain the required liquidity, if needed, and assess the market appetite for a particular security, including the related haircut applied to put the operation in place. Banks must also ensure that there are no operational issues that could have an impact on the timing and the feasibility of the operation (e.g. limits to the transferability of the security, in case this is held in a local and foreign branch portfolio).