ATP vs CTP policies in co-production context: the winner is not always the expected one

International audience ; The impacts of using different order promising policies in traditional manufacturing industries are usually well known and documented in the literature. However, for industries facing divergent processes with co-production (i.e. several products simultaneously produced from a common raw material) as in the sawmilling industry, the evaluation, comparison, and selection of policies is not a trivial task. In this paper we compare different sawmilling industry order promising policies for various market conditions and demonstrate how and when these characteristics may call for Available-To-Promise (ATP), Capable-To-Promise (CTP), or other policies. It has been demonstrated that the best policy often differs from what would have been optimal in a classical manufacturing context (e.g. assembly).