A bank may not incur any temporary large exposures arising from investment business (where the intention by the concerned bank is to securitize such assets or place them with investors), which exceeds 15% of the bank's (consolidated) capital base without the prior written approval of the CBB. The maximum level of such temporary exposures that the CBB may approve per individual exposure must not exceed 25% of the concerned bank's consolidated capital base for a maximum three month period. Any such exposures held for more than three months from the originating date of the exposure must be deducted from the consolidated capital base where there is any excess above 15%. In order for a bank to be allowed such exposures, it must have in place a written detailed due diligence policy & procedures for such business which must be approved by the bank's board of directors.