Solution : https://service.sap.com/sap/support/notes/518189 (SAP Service marketplace login required)
Key words :
inform lo-vc development', abap runtime error message_type_x, message 'duplicate owner, sales order item, sales order, error occurs, message cuib1699, item receives, item number, system generates
Related Notes :
| 529237 | MESSAGE_TYPE_X. duplicate owner |
| 510873 | Configuration is displayed as invalid |
| 510129 | Duplicate owners |