Regarding 1.9.1.After SAP S/4HANA 2023 Release you cant use /SAPAPO/MAT1 for this Settings. You have to use MM02.https://community.sap.com/t5/supply-chain-management-blogs-by-sap/how-to-edit-product-group-product-group-type-after-sap-s-4-hana-2023/ba...