88. System harmonization must include(1) a determination of the types of containers or residual materials that each system may be required to take in charge despite them not being covered by any of the system, including(a) with respect to redeemable containers that the system of selective collection may be required to deal with, caps, tabs, labels and shrink sleeves; and
(b) with respect to containers or residual materials that the deposit-refund system may be required to deal with, cardboard, containers not covered by the deposit-refund system, recipients and plastic film used to transport redeemable containers;
(2) the methods used to determine the quantities of containers or residual materials covered by a system that must be dealt with by the other system, including the criteria used for the characterization, as the case may be, of the redeemable containers or residual materials and an identification of the persons responsible for determining the quantities and the persons responsible for ensuring follow-up;
(3) the terms and conditions applicable to the management of containers or residual materials covered by a system that must be dealt with by the other system, in particular concerning traceability and, where applicable, the manner in which they may be dealt with by the system by which they are covered;
(4) the financial terms and conditions for the performance of the obligations on which the 2 bodies agree;
(5) the terms and conditions for communications between the 2 bodies;
(6) the measures to be implemented to make it possible to share, as far as possible, the premises used for each system and the costs for implementing the systems, and any other measure to optimize the use of the system resources.