What does this Practice Note cover? This Practice Note details the most common type of credit derivative transaction, a credit default swap (CDS). It also explains why parties enter into CDS, how to document a CDS and how CDS are cleared. Furthermore, it sets out some specific CDS structures including CDS referencing asset-backed securities (CDS on ABS), basket CDS (both portfolio CDS and Nth to default CDS), loan only CDS (LCDS) and collateralised debt obligations (CDOs). What is a CDS transaction? The most common type of credit derivative transaction is a credit default swap (CDS). This is a transaction between two parties which is based on the creditworthiness of a third party, known as the reference entity. This reference entity can be a corporate, sovereign, municipality or a similar organisation and does not need to be a party to, or even aware of, the transaction. In fact, it is unlikely the reference entity will be aware of the transaction. The protection buyer is the party that is purchasing the credit protection on the reference