--- a/src/DIF/EFCP/DTP/UserDataField.cc
+++ b/src/DIF/EFCP/DTP/UserDataField.cc
@@ -29,6 +29,7 @@
 {
   size = 0;
   sduDelimitFlags = 0;
+  sduSeqNum = 0;
 
 }
 
@@ -118,3 +119,6 @@
 
 }
 
+void UserDataField::setSduSeqNum(unsigned int sduSeqNum) {
+    this->sduSeqNum = sduSeqNum;
+}