diff --git a/src/bonsai/bonsai/bim/module/cost/operator.py b/src/bonsai/bonsai/bim/module/cost/operator.py
index eb69674a09..867d2ba162 100644
--- a/src/bonsai/bonsai/bim/module/cost/operator.py
+++ b/src/bonsai/bonsai/bim/module/cost/operator.py
@@ -613,7 +613,7 @@ class ShowAssignedCostRate(bpy.types.Operator):
     bl_idname = "bim.show_assigned_cost_rate"
     bl_label = "Info about the assigned cost item rate"
     bl_options = {"REGISTER"}
-    assigned_rate_id: bpy.props.IntProperty()
+    assigned_rate_identification: bpy.props.StringProperty()
     assigned_rate_name: bpy.props.StringProperty()
     assigned_rate_description: bpy.props.StringProperty()
     assigned_rate_total_value: bpy.props.FloatProperty()
@@ -629,7 +629,7 @@ class ShowAssignedCostRate(bpy.types.Operator):
     def draw(self, context):
         layout = self.layout
         wrapper = textwrap.TextWrapper(width=80)
-        layout.label(text=f"ID: {self.assigned_rate_id}")
+        layout.label(text=f"ID: {self.assigned_rate_identification}")
         layout.label(text=f"Name: {self.assigned_rate_name}")
         layout.label(text="Description:")
         for line in wrapper.wrap(str(self.assigned_rate_description)):
diff --git a/src/bonsai/bonsai/bim/module/cost/ui.py b/src/bonsai/bonsai/bim/module/cost/ui.py
index ba327ad2bf..664b52f264 100644
--- a/src/bonsai/bonsai/bim/module/cost/ui.py
+++ b/src/bonsai/bonsai/bim/module/cost/ui.py
@@ -733,7 +733,8 @@ class BIM_UL_cost_items_trait:
         row.alignment = "LEFT"
         if cost_item["AssignedCostRate"] is not None:
             op = row.operator("bim.show_assigned_cost_rate", text="", emboss=False, icon="ZOOM_IN")
-            op.assigned_rate_id = cost_item["AssignedCostRate"].id()
+            identification = cost_item["AssignedCostRate"].Identification
+            op.assigned_rate_identification = identification if identification is not None else "XXX"
             op.assigned_rate_name = cost_item["AssignedCostRate"].Name or ""
             op.assigned_rate_description = cost_item["AssignedCostRate"].Description or ""
             op.assigned_rate_total_value = CostSchedulesData.data["cost_items"][cost_item["AssignedCostRate"].id()][