Solution : https://service.sap.com/sap/support/notes/607539 (SAP Service marketplace login required)
Key words :
attached source code corrections, -added tax code, function module bapi_po_create1, condition type navs, -deductible input tax, ekpo-mwskz reason, purchase order item, purchase order, transfer structure, poitem-taxcode
Related Notes :
| 1039435 | FAQ: Trigger of tax update |
| 625892 | ME59 ME59N Problem during background processing |
| 510269 | Tax code determination for service item |
| 411375 | ME21 with reference to PReq, price change not accepted |