Insurance and reinsurance undertakings must put in place internal processes and procedures to ensure the appropriateness, completeness and accuracy of the data used in the calculation of their prudential technical provisions referred to in Article L. 351-2.
Where, in particular circumstances, as defined in Article 19 of Commission Delegated Regulation (EU) No 2015/35 of 10 October 2014, insurance and reinsurance undertakings do not have sufficient data of appropriate quality to apply a reliable actuarial method to all or a subset of their liabilities, or claims arising from reinsurance contracts and securitisation vehicles, appropriate approximations, including case-by-case approaches, may be used for the calculation of the best estimate.