This tool makes it possible to assess the sustainability of packaging based on different parameters. AINIA has supported and advised on defining the functionality category, establishing criteria for categorising the different variables and helping to validate the tool against various “best runners” jointly proposed by ECOEMBES and AINIA. Based on the results, adjustments have been made to the established parameters in order to resolve the issues identified. Within PACKCD, the functionality parameter is intended to highlight the primary role of packaging in protecting against spoilage agents (oxygen, water, light, loss of aromas) and preserving the food or product contained, making this a differentiating parameter of the tool developed by ECOEMBES.