diff --git a/lib/serialport-parsers.js b/lib/serialport-parsers.js
index 845f2e7..8c8ed7d 100644
--- a/lib/serialport-parsers.js
+++ b/lib/serialport-parsers.js
@@ -116,7 +116,7 @@ parserReadline.on('data', (data) => {
     }
 
     if (pduParsed && pduParsed.constructor.name !== 'Deliver') {
-        logger.warn('Unknown PDU message type name. PLEASE REPORT IT TO DEVELOPER AT TEKTRANS', { typeName: pduParsed.constructor.name, type: pduParsed.getType(), data: data.toString().trim() });
+        logger.warn('WARN-9DA32C41: Unknown PDU message type name. PLEASE REPORT IT TO DEVELOPER AT TEKTRANS', { typeName: pduParsed.constructor.name, type: pduParsed.getType(), data: data.toString().trim() });
     }
 
     if (pduParsed && pduParsed.constructor.name === 'Deliver' && pduParsed.getData().getSize()) {