Solution : https://service.sap.com/sap/support/notes/360364 (SAP Service marketplace login required)
Key words :
additional key words mwsk1, add field tax_code, attached program correction, tax jurisdiction code, added tax indicator, add fields cond_no, tax correctly, tax recalculation, sales order, crm system
Related Notes :
513301 | Tax code is not filled |
398117 | Missing fields in the ALE interface |
360350 | Tax calculation for document transfer CRM to R/3 |