diff --git a/connectors/dds4ccm/tests/idl_conversion/data/idl_conversion.idl b/connectors/dds4ccm/tests/idl_conversion/data/idl_conversion.idl
index 2fa98119..84302c00 100644
--- a/connectors/dds4ccm/tests/idl_conversion/data/idl_conversion.idl
+++ b/connectors/dds4ccm/tests/idl_conversion/data/idl_conversion.idl
@@ -69,6 +69,7 @@ module Example {
   typedef B51       B55;
   typedef string    B56[6][5];
   typedef sequence<string> B57;
+  typedef sequence<unsigned long long> B57_stringlength;
   typedef string<512> B58;
   typedef sequence<B58> B59;
   typedef B59       B60;
@@ -169,6 +170,7 @@ module Example {
     B55 b_55;
     B56 b_56;
     B57 b_57;
+    B57_stringlength b_57_stringlength;
     B59 b_59;
     B60 b_60;
 
diff --git a/connectors/dds4ccm/tests/idl_conversion/receiver/idl_conversion_receiver_exec.cpp b/connectors/dds4ccm/tests/idl_conversion/receiver/idl_conversion_receiver_exec.cpp
index d33d8545..4377110e 100644
--- a/connectors/dds4ccm/tests/idl_conversion/receiver/idl_conversion_receiver_exec.cpp
+++ b/connectors/dds4ccm/tests/idl_conversion/receiver/idl_conversion_receiver_exec.cpp
@@ -435,8 +435,7 @@ namespace IDL_Conversion_Test_Receiver_Impl
     {
       for (uint16_t y = 0; y < 5; ++y)
       {
-        const std::string expected (
-          std::to_string (x + y + datum.iteration ()));
+        const std::string expected (std::to_string (x + y + datum.iteration ()));
         if (datum.b_56 ()[x][y] != expected)
         {
           DDS4CCM_TEST_ERROR << "Receiver check - ERROR: unexpected value for "
@@ -454,12 +453,18 @@ namespace IDL_Conversion_Test_Receiver_Impl
       const std::string expected ("VALUE_"+std::to_string (datum.iteration () + c));
       if (val != expected)
       {
+        if (datum.b_57_stringlength()[c] != expected.length())
+            {
+              DDS4CCM_TEST_ERROR << "Receiver check - ERROR: string length of "
+                << "datum.b_57[" << c << "] is not " << expected.length()
+                << " but " << datum.b_57_stringlength()[c] << std::endl;
+            }
         if (!val.empty ())
         {
           if (val.back() == 0)
           {
             DDS4CCM_TEST_ERROR << "Receiver check - ERROR: last character of "
-              << "datum.b_57[" << c << "] is 0"  << std::endl;
+              << "datum.b_57[" << c << "] is 0" << std::endl;
           }
         }
         DDS4CCM_TEST_ERROR << "Receiver check - ERROR: unexpected value for "
diff --git a/connectors/dds4ccm/tests/idl_conversion/sender/idl_conversion_sender_exec.cpp b/connectors/dds4ccm/tests/idl_conversion/sender/idl_conversion_sender_exec.cpp
index 80c96c8b..1144a51b 100644
--- a/connectors/dds4ccm/tests/idl_conversion/sender/idl_conversion_sender_exec.cpp
+++ b/connectors/dds4ccm/tests/idl_conversion/sender/idl_conversion_sender_exec.cpp
@@ -405,9 +405,12 @@ namespace IDL_Conversion_Test_Sender_Impl
       }
 
       Example::B57 b57;
+      Example::B57_stringlength b57_stringlength;
       for (uint16_t val = this->last_iteration_; val <  this->last_iteration_ + 100; ++val)
       {
-        b57.push_back ("VALUE_"+std::to_string (val));
+        std::string tosend = "VALUE_"+std::to_string (val);
+        b57.push_back (tosend);
+        b57_stringlength.push_back (tosend.length ());
       }
 
       Example::B59 b59;
@@ -487,6 +490,7 @@ namespace IDL_Conversion_Test_Sender_Impl
           b55,
           b56,
           b57,
+          b57_stringlength,
           b59,
           b60,
           a_13 ? Example::B70::B70_1 : Example::B70::B70_2,