Solution : https://service.sap.com/sap/support/notes/731669 (SAP Service marketplace login required)
Key words : 
alternative exchange rates, exchange rate, legal requirement, tax amounts, fi documents, terms hungary, billing document, t001-txkrs, saplfaci reason, legal change
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| 653544 | EU2004:New members of Europ.Union as of 01/05/2004 |