In many cases, the purchase price of receivables will reflect a discount (not to be confused with the discount concept defined in paragraphs CA-5.3.40 and CA-5.4.9) that provides first loss protection for default losses, dilution losses or both (see paragraph CA-6.4.73). To the extent a portion of such a purchase price discount will be refunded to the seller, this refundable amount may be treated as first loss protection under the IRB securitisation framework. Non- refundable purchase price discounts for receivables do not affect either the EL-provision calculation in section CA-5.7 or the calculation of risk-weighted assets.