diff --git a/sonar-project.properties b/sonar-project.properties
index c320719..e5973df 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -11,3 +11,4 @@ sonar.tests=tests
 sonar.sourceEncoding=UTF-8
 sonar.python.version=3
 sonar.python.coverage.reportPaths=coverage.xml
+sonar.coverage.exclusions=src/power_grid_model_ds/_core/visualizer/*
\ No newline at end of file
diff --git a/src/power_grid_model_ds/_core/visualizer/callbacks/element_selection.py b/src/power_grid_model_ds/_core/visualizer/callbacks/element_selection.py
index 03e8fbd..8144998 100644
--- a/src/power_grid_model_ds/_core/visualizer/callbacks/element_selection.py
+++ b/src/power_grid_model_ds/_core/visualizer/callbacks/element_selection.py
@@ -16,12 +16,16 @@
     Input("cytoscape-graph", "selectedNodeData"),
     Input("cytoscape-graph", "selectedEdgeData"),
 )
-def display_selected_element(node_data, edge_data):
+def display_selected_element(node_data: list[dict[str, Any]], edge_data: list[dict[str, Any]]):
     """Display the tapped edge data."""
     if node_data:
         return _to_data_table(node_data.pop())
     if edge_data:
-        return _to_data_table(edge_data.pop())
+        edge_data_dict = edge_data.pop()
+        del edge_data_dict["source"]  # duplicated by from_node
+        del edge_data_dict["target"]  # duplicated by to_node
+        del edge_data_dict["group"]  # unnecessary information
+        return _to_data_table(edge_data_dict)
     return SELECTION_OUTPUT_HTML