Solution : https://service.sap.com/sap/support/notes/632518 (SAP Service marketplace login required)
Key words :
'billing document tio billing document' document chain, copying control 'billing document, 'create billing document, billing document' function, document type g2, billing document occurs, reversed billing document, 6ca document flow, 'reverse item' function, support package- sapkh46b28
Related Notes :
391530 | Invoice-related billing documents and their cancellation |