Solution : https://service.sap.com/sap/support/notes/112523 (SAP Service marketplace login required)
Key words :
menu option 'edit > display img activity', table tab page 'maintenance objects', group box 'object attributes', entry 'define model orders', flag 'current settings', checkbox 'current settings', maintain model orders, receiver profitability segment, target system refers, table t000
Related Notes :
492226 | Internal orders: transport long text model order |
397799 | INFORMATION: CO-OM-OPA (Order & Project Accounting) |
364098 | Display model order in not modifiable system |
93897 | Change date is not set / KO02 |