Solution : https://service.sap.com/sap/support/notes/704138 (SAP Service marketplace login required)
Key words :
sales order entry, symptom tax code 2, tax number field, tax code 2, tax number, taxcode 2 field, tax office, time customer, turkeywhen entering, -time customer
Related Notes :
| 361364 | Tax numbers for one-time customers - legal changes |