Solution : https://service.sap.com/sap/support/notes/518777 (SAP Service marketplace login required)
Key words :
choose menu option 'edit' -> 'attributes', partner determination procedures reason, terms sap gui, enter program saplcrm_sales_ui, select entry 'scrarea1', choose 'change', partner data, partner subscreen, lines' entry, displayed correctly
Related Notes :
547705 | SAPKU31001: Support Package 01 for CRM 3.1 |