(64)However, the actual CVA risk of the exempted transactions could be a source of significant risk for institutions applying those exemptions. If those risks materialise, the institutions concerned could suffer significant losses. As EBA highlighted in its report on CVA of 25 February 2015, the CVA risk of the exempted transactions raises prudential concerns that are not addressed in Regulation (EU) No 575/2013. To help supervisors monitor the CVA risk arising from the exempted transactions, institutions should report the calculation of own funds requirements for CVA risk of the exempted transactions that would be required if those transactions were not exempted. In addition, EBA should develop guidelines to help supervisors identify excessive CVA risk and to improve the harmonisation of supervisory actions in that area across the Union.