diff --git a/bsmd.hisnord/transmitter.cs b/bsmd.hisnord/transmitter.cs
index 62439e54..2f7c62cb 100644
--- a/bsmd.hisnord/transmitter.cs
+++ b/bsmd.hisnord/transmitter.cs
@@ -38,7 +38,7 @@ namespace bsmd.hisnord
                 startInfo.RedirectStandardError = true;
                 startInfo.RedirectStandardOutput = true;
                 startInfo.RedirectStandardInput = false;
-                startInfo.UseShellExecute = false;                
+                startInfo.UseShellExecute = false;
 
                 using (Process transmitterProcess = new Process())
                 {
@@ -57,7 +57,7 @@ namespace bsmd.hisnord
                     processId = transmitterProcess.Id;
 
                     // _log.DebugFormat("started {0}", transmitterProcess.ProcessName);
-                    int timeout = Properties.Settings.Default.BatchTimeoutMins * 1000 * 60; // convert to ms                
+                    int timeout = Properties.Settings.Default.BatchTimeoutMins * 1000 * 60; // convert to ms
 
                     _log.DebugFormat($"starting transmitter, process ID: {processId}, timeout {timeout} ms.");
 
@@ -75,6 +75,26 @@ namespace bsmd.hisnord
                             _log.Warn($"Killing Transmitter {processId} failed: {e.Message}");
                         }
                     }
+                    else
+                    {
+                        int exitCode = transmitterProcess.ExitCode;
+                        if (exitCode != 0)
+                        {
+                            string errorText = "";
+                            switch(exitCode)
+                            {
+                                case 1: errorText = "Schema violation"; break;
+                                case 2:
+                                case 3: errorText = "Element must not be null"; break;
+                                case 1000: errorText = "Internal error"; break;
+                                case 1001: errorText = "Access denied - Login"; break;
+                                case 1004: errorText = "Access denied - Internal Configuration"; break;
+                                case 1005: errorText = "Internal configuration error"; break;
+                                case 2000: errorText = "File not found"; break;
+                            }
+                            _log.ErrorFormat("Transmitter returned code {0}: {1}", exitCode, errorText);
+                        }
+                    }
                 }
                 return true;
             }
@@ -96,7 +116,7 @@ namespace bsmd.hisnord
             // Output of STDERR. HIS-Nord seems to be using this for logging, so we do not flag as error.
             if(!e.Data.IsNullOrEmpty())
                 _log.Debug(e.Data);
-        }        
+        }
 
         private static void TransmitterProcess_Exited(object sender, EventArgs e)
         {
@@ -137,12 +157,12 @@ namespace bsmd.hisnord
                     }
                 }
                 _log.Info($"deleted {cnt} files from {Properties.Settings.Default.OutputArchiveDir}");
-                
+
             }
             catch(Exception ex)
             {
                 _log.ErrorFormat("Error trying to delete old files: {0}", ex.Message);
             }
-        }        
+        }
     }
 }