In their response, they argue that while the IASB has proposed several helpful improvements in its IFRS 17 exposure draft, unfortunately a number of issues remain unaddressed and further changes are needed.
Three issues — level of aggregation, transition and presentation — were given particular emphasis because they will have the largest overall impact on the operational complexity and costs of implementing IFRS 17.
https://www.insuranceeurope.eu/ifrs-17-eu-insurers-say-some-improvements-welcome-major-issues-still-be-addressed