; and (B) unless the agreement requires each employer who is a party to such agreement, including employers whose employees are not participants in the legacy plan, to provide contributions to the legacy plan with respect to such composite plan in a manner that satisfies the transition contribution requirements of subsection (d). (2) Notice Not later than 30 days after a determination by a plan sponsor of a composite plan that an agreement fails to satisfy the requirements described in paragraph (1), the plan sponsor shall provide notification of such failure and the reasons for such determination— (A) to the parties to the agreement; (B) to active participants of the composite plan who have ceased to accrue or otherwise earn benefits with respect to service with an employer pursuant to paragraph (1)