In project finance, the CBB may permit an Islamic bank licensee to employ an alternative approach, namely the supervisory slotting criteria. Under this method, an Islamic bank licensee is required to map its internal risk grades into four supervisory categories for specialised financing, as described in Appendix CA-5. Each of these categories is associated with a specific RW, as given in the following. These RWs include an additional fixed factor of 20% RW to cater for the potential decline in the Mudarabah's or Musharakah's net asset value.