diff --git a/service/csvService.js b/service/csvService.js
index 6991de9..c970ddd 100644
--- a/service/csvService.js
+++ b/service/csvService.js
@@ -215,6 +215,18 @@ function cleanCsvValue(value) {
   return text.includes('"') ? text.replace(/"/g, "'") : text;
 }
 
+function formatApiErrorResponse(error) {
+  const responseData = error && error.response && error.response.data;
+  if (responseData !== undefined && responseData !== null) {
+    if (typeof responseData === 'string') return responseData;
+    if (responseData.error) return responseData.error;
+    if (responseData.message) return responseData.message;
+    return JSON.stringify(responseData);
+  }
+
+  return error && (error.message || String(error));
+}
+
 async function countValidLines(inputPath) {
   await discoverDataType(inputPath);
   const rows = readRows(inputPath);
@@ -261,7 +273,7 @@ async function processCsvFile(jobId, inputPath, originalName) {
       outStream.write(outCols.join(';') + '\n');
       incrementProcessed(jobId);
     } catch (err) {
-      const errMsg = cleanCsvValue(err && (err.message || String(err)));
+      const errMsg = cleanCsvValue(formatApiErrorResponse(err));
       const outCols = ['', '', '', errMsg, ...cols].map(cleanCsvValue);
       outStream.write(outCols.join(';') + '\n');
       incrementErrors(jobId);