Solution : https://service.sap.com/sap/support/notes/514703 (SAP Service marketplace login required)
Key words :
lock situation exists, undesired side effect, missing items subsequently, vf03item cancellation reason, attached advance correction, collective billing document, desired full cancellation, field 'billing document, cancelled billing document, missing items
Related Notes :
| 360487 | Cancellation individual items: entire FI-document cancelled |