Solution : https://service.sap.com/sap/support/notes/384034 (SAP Service marketplace login required)
Key words :
node 'partial network' corresponds, option switch 'activity element', option switch 'network', drag&drop problems, drag&drop functions, drag&drop reason, project planning board, planning board, project builder, template screen
Related Notes :
451214 | CJ2B:Mouse pointer w/ drag&drop of milestone/activity elmnts |
375930 | Drag & Drop and templates do not work |