Solution : https://service.sap.com/sap/support/notes/1521933 (SAP Service marketplace login required)
Key words : 
relevant partner role, kuagv-kunnr reason, attached correction instructions, terms likp-kunag, likp-kunag, likp-waerk, party field, delivery header, order combination, uniform currency
Related Notes : 
       
| 715021 | LIKP-KUNAG remains filled after sold-to party deletion | 
| 184914 | Transfer of currency from sales order to delivery |