diff --git a/internal/lambda/interop/model.go b/internal/lambda/interop/model.go
index d4c6d9ec..60aba410 100644
--- a/internal/lambda/interop/model.go
+++ b/internal/lambda/interop/model.go
@@ -359,7 +359,7 @@ type ErrorResponseTooLargeDI struct {
 
 // ErrorResponseTooLarge is returned when response provided by Runtime does not fit into shared memory buffer
 func (s *ErrorResponseTooLarge) Error() string {
-	return fmt.Sprintf("Response payload size (%d bytes) exceeded maximum allowed payload size (%d bytes).", s.ResponseSize, s.MaxResponseSize)
+	return fmt.Sprintf("Response payload size exceeded maximum allowed payload size (%d bytes).", s.MaxResponseSize)
 }
 
 // AsErrorResponse generates ErrorInvokeResponse from ErrorResponseTooLarge
diff --git a/internal/lambda/rapi/handler/invocationresponse_test.go b/internal/lambda/rapi/handler/invocationresponse_test.go
index 9ce0a3d9..628208f5 100644
--- a/internal/lambda/rapi/handler/invocationresponse_test.go
+++ b/internal/lambda/rapi/handler/invocationresponse_test.go
@@ -64,7 +64,7 @@ func TestResponseTooLarge(t *testing.T) {
 	assert.NotNil(t, errorResponse)
 	assert.Nil(t, flowTest.InteropServer.Response)
 	assert.Equal(t, fatalerror.FunctionOversizedResponse, errorResponse.FunctionError.Type)
-	assert.Equal(t, "Response payload size (6291557 bytes) exceeded maximum allowed payload size (6291556 bytes).", errorResponse.FunctionError.Message)
+	assert.Equal(t, "Response payload size exceeded maximum allowed payload size (6291556 bytes).", errorResponse.FunctionError.Message)
 
 	var errorPayload map[string]interface{}
 	assert.NoError(t, json.Unmarshal(errorResponse.Payload, &errorPayload))
diff --git a/internal/lambda/rapi/rapi_fuzz_test.go b/internal/lambda/rapi/rapi_fuzz_test.go
index 46f99f9f..b6651bca 100644
--- a/internal/lambda/rapi/rapi_fuzz_test.go
+++ b/internal/lambda/rapi/rapi_fuzz_test.go
@@ -340,7 +340,7 @@ func assertInvocationResponseTooLarge(t *testing.T, responseRecorder *httptest.R
 	assert.NotNil(t, errorResponse)
 	assert.Nil(t, flowTest.InteropServer.Response)
 	assert.Equal(t, fatalerror.FunctionOversizedResponse, errorResponse.FunctionError.Type)
-	assert.Equal(t, fmt.Sprintf("Response payload size (%v bytes) exceeded maximum allowed payload size (6291556 bytes).", len(responseBody)), errorResponse.FunctionError.Message)
+	assert.Equal(t, "Response payload size exceeded maximum allowed payload size (6291556 bytes).", errorResponse.FunctionError.Message)
 
 	var errorPayload map[string]interface{}
 	assert.NoError(t, json.Unmarshal(errorResponse.Payload, &errorPayload))
diff --git a/internal/lambda/rapidcore/server.go b/internal/lambda/rapidcore/server.go
index c0c24e34..b82d8276 100644
--- a/internal/lambda/rapidcore/server.go
+++ b/internal/lambda/rapidcore/server.go
@@ -658,7 +658,7 @@ func (s *Server) Invoke(responseWriter http.ResponseWriter, invoke *interop.Invo
 		// The logic would be almost identical, except that init failures could manifest
 		// through return values of FastInvoke and not Reserve()
 
-		reserveResp, err := s.Reserve(invoke.ID, "", "")
+		reserveResp, err := s.Reserve(invoke.ID, invoke.TraceID, invoke.LambdaSegmentID)
 		if err != nil {
 			log.Infof("ReserveFailed: %s", err)
 		}