Solution : https://service.sap.com/sap/support/notes/1547567 (SAP Service marketplace login required)
Key words :
correct line item, passed line-, determined line-, accounting document, tax amounts, posted document, tax amount, terms iedi, idoc_input_invoic_create reason, note 794969 implemented
Related Notes :
794969 | Calculating an IDoc with jurisdiction codes and tax by line |