The most common types of approvals in use at banks are: -

<p style="text-align:left;"><span><span>A -</span> <span>Confirmations</span> <span>negative</span></span></p> <p style="text-align:left;"><span><span>B</span> <span>-</span> <span>positive</span> <span>confirmations</span></span></p> <p style="text-align:left;"><span><span>C</span> <span>-</span> <span>Confirmations</span> <span>blind</span></span></p> <p style="text-align:left;"><span><span>D</span> <span>-</span> <span>Administrative</span> <span>approvals</span></span></p>