Solution : https://service.sap.com/sap/support/notes/829209 (SAP Service marketplace login required)
Key words :
sd_document_item_screen_setpos lv60pu13 reason, call transaction se91, relevant error message, message class vf, select message number 218, 'message maintenance, item selection, system accepts, terms va01, articles contained
Related Notes :
| 1728010 | Billing date in item selection |
| 971943 | Item selection for batches (UECHA field) |
| 598957 | Selection criteria during the item selection |
| 482506 | Item selection for batches |
| 442997 | Item sel.: Complete del. quantity despite partial billing |
| 213614 | Billing document with item selection (delivery-related) |