1. No exposure in respect of which an institution obtains credit risk mitigation shall produce a higher risk-weighted exposure amount or expected loss amount than an otherwise identical exposure in respect of which an institution has no credit risk mitigation.
2. Where the risk-weighted exposure amount already takes account of credit protection under Chapter 2 or Chapter 3, as applicable, institutions shall not take into account that credit protection in the calculations under this Chapter.
3. Where the provisions in Sections 2 and 3 are met, institutions may amend the calculation of risk-weighted exposure amounts under the Standardised Approach and the calculation of risk-weighted exposure amounts and expected loss amounts under the IRB Approach in accordance with the provisions of Sections 4, 5 and 6.