Solution : https://service.sap.com/sap/support/notes/839849 (SAP Service marketplace login required)
Key words :
document flow reason, service entry sheet, service entry, 2 line items, refer completely, item status, partially referred, wrong status, vbup-rfsta, vbup-gbsta
Related Notes :
524974 | |
513810 | BOS Sales document: Items can be billed twice |
495053 | Status of BOS sales document is Open |