(8)To ensure legal certainty for contribution periods preceding the 2026 contribution period, a transitional limitation period should apply to requests for restatements or revisions of information submitted for the calculation of annual contributions. Accordingly, such requests relating to contribution periods for which the decision determining the annual contribution was notified before the 2026 contribution period should be admissible only until 31 January 2031. That transitional limitation period should not be subject to interruption.