diff --git a/source/mq.cpp b/source/mq.cpp
index 8b07168..b1405e4 100644
--- a/source/mq.cpp
+++ b/source/mq.cpp
@@ -1570,10 +1570,14 @@ std::string pqBuildTracePayload(const PqToolConfig& cfg,
                                 const std::string& frontType) {
     std::string guid = makeGuid();
     int processNo = 0;
-    try {
-        processNo = device.processNo.empty() ? 0 : std::stoi(device.processNo);
-    } catch (...) {
+    if (frontType == "cfg_3s_data") {
         processNo = 0;
+    } else {
+        try {
+            processNo = device.processNo.empty() ? 0 : std::stoi(device.processNo);
+        } catch (...) {
+            processNo = 0;
+        }
     }
 
     json body = {