https://userapps.support.sap.com/sap/support/knowledge/en/3311285
3311285 - MIR4: Tax Exchange Rate (TXKRS) is overwritten - SAP ERP & SAP S/4HANA | SAP Knowledge...
An invoice is parked (for example, through BAPI ) with a specific Exchange Rate for Taxes (TXKRS). When the user accesses the invoice document for further...