Solution : https://service.sap.com/sap/support/notes/451214 (SAP Service marketplace login required)
Key words :
additional key words drag&drop, attached program correction, assign activity elements, activity elements, program error, mouse pointer, error occurs, accordance, assignment, milestones
Related Notes :
| 384034 | Drag&Drop is not always active in planning board |
| 375930 | Drag & Drop and templates do not work |