Solution : https://service.sap.com/sap/support/notes/572673 (SAP Service marketplace login required)
Key words :
system generates messageiw238 'object list assignments, object list entries inactive 005 selecting, regular plant maintenance' reason, displays existing assignments correctly, maintenance plan notifications 003 assignments, order types -> define notification-, object list entries, customizing pathplant maintenance, customer service-> maintenance, service processing -> maintenance
Related Notes :
| 598598 | FAQ: Assignment of operations for object list entries |
| 572084 | Removing object list assignment to operations |