You have created an IC JEV (Intercompany Journal Entry Voucher) via web service and, in the payload, you specify a given transaction as EUR, for example. However, upon posting the IC JEV, the transaction currency is changed to be the same as the company currency.
SAP Business ByDesign.
For IC JEVs posted via web service, the transaction currency depends on the company currency of the leading company.
This is the designed system behavior and cannot be changed from the web service call.
If it is required to post with an alternate transaction currency other than the company currency of the leading company, you can manually create the IC JEV from General Ledger work center.
IC JEV. Inter-company. Journal Entry. JE. Journal Entry Voucher. Leading Company. Company Currency Amount. Transaction Currency Amount. Webservice. Web-service. Transaction Currency Determination , KBA , AP-DUE-RPE , Receivables Payables Entry , How To