Dynamic Product-Service Business Ecosystems (DPSBEs) are collaborative forms that aim to handle product-service business actions in a business ecosystem by creating, sharing, using and re-using information across functional teams and enterprise boundaries. DPSBEs depend on the ability of their members' information systems to interoperate. This ability is related to making their semantics explicit and formal, so information can be interpreted and managed both by humans and systems. In this position paper, we establish the scientific background for the semantic interoperability for dynamic product-service business ecosystems.