Hello! I am trying to set up a Java Projekt in which i create and send invoices. Unfortunately it seems, that the APi has problems handling umlaute ( Ä, Ü, Ö) in my requests This is the response i get if the name contains an umlaut. ( i used Öliver as an example) "name":"INVALID_REQUEST", "message":"Request is not well-formed, syntactically incorrect, or violates schema.", "debug_id":"3195c3b15b67e", "details":[ { "field":"invoicer/name/given_name", "location":"body", "description":"Invalid UTF-8 middle byte 0x6c at line:1, column:338" This is the part of the Code that creates the invoice URL invoiceUrl = new URL(invoiceEndpoint); HttpURLConnection invoiceConn = (HttpURLConnection) invoiceUrl.openConnection(); invoiceConn.setRequestMethod("POST"); invoiceConn.setRequestProperty("Authorization", "Bearer " + accessToken); invoiceConn.setRequestProperty("Content-Type", "application/json"); invoiceConn.setRequestProperty("Prefer", "return=representation"); invoiceConn.setRequestProperty("charset", "utf-8"); invoiceConn.setDoOutput(true); OutputStreamWriter invoiceWriter = new OutputStreamWriter(invoiceConn.getOutputStream()); invoiceWriter.write(invoice.toString()); invoiceWriter.flush(); invoiceWriter.close(); Thank you for your help
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