If the user creates a second request, the new transaction must be evaluated anew, as the reserve, limits, and rate may have changed. A repeat transaction also requires verification of details, even if the previous one was completed without delays. No service provides an absolute guarantee of unchanged conditions for a long time, so it is better to fix the parameters just before the transfer. The second operation may take place at a different rate, and the electronic exchange of digital assets for fiat always depends on current liquidity.