Solution : https://service.sap.com/sap/support/notes/180369 (SAP Service marketplace login required)
Key words :
distribution -> sales -> sales documents -> sales document item -> define item categories', delivery-related billing document relevance, order-related billing document relevance, due date calculation depends, sales order, distribution document, 'billing relevance' field, respective item category, item category depend, due date calculation
Related Notes :
24883 | CMF: Determination of value/planning date |