diff --git a/src/antares/craft/exceptions/exceptions.py b/src/antares/craft/exceptions/exceptions.py
index 554b4882..a6e458cb 100644
--- a/src/antares/craft/exceptions/exceptions.py
+++ b/src/antares/craft/exceptions/exceptions.py
@@ -301,8 +301,8 @@ def __init__(self, area_name: str, cluster_name: str, matrix_name: str, message:
 
 
 class ThermalMatrixUpdateError(Exception):
-    def __init__(self, area_name: str, cluster_name: str, message: str) -> None:
-        self.message = f"Could not upload matrix for cluster {cluster_name} inside area {area_name}: " + message
+    def __init__(self, area_name: str, cluster_name: str, matrix_name: str, message: str) -> None:
+        self.message = f"Could not upload {matrix_name} for cluster {cluster_name} inside area {area_name}: " + message
         super().__init__(self.message)
 
 
diff --git a/src/antares/craft/service/api_services/services/thermal.py b/src/antares/craft/service/api_services/services/thermal.py
index bb173634..e3e296b8 100644
--- a/src/antares/craft/service/api_services/services/thermal.py
+++ b/src/antares/craft/service/api_services/services/thermal.py
@@ -82,7 +82,9 @@ def update_thermal_matrix(
         try:
             upload_series(self._base_url, self.study_id, self._wrapper, matrix, path.as_posix())
         except APIError as e:
-            raise ThermalMatrixUpdateError(thermal_cluster.area_id, thermal_cluster.name, e.message) from e
+            raise ThermalMatrixUpdateError(
+                thermal_cluster.area_id, thermal_cluster.name, ts_name.value, e.message
+            ) from e
 
     @override
     def get_thermal_matrix(self, thermal_cluster: ThermalCluster, ts_name: ThermalClusterMatrixName) -> pd.DataFrame:
diff --git a/tests/antares/services/api_services/test_thermal_api.py b/tests/antares/services/api_services/test_thermal_api.py
index 71dbab28..f82472db 100644
--- a/tests/antares/services/api_services/test_thermal_api.py
+++ b/tests/antares/services/api_services/test_thermal_api.py
@@ -178,7 +178,7 @@ def test_update_prepro_data_fail(self):
             mocker.post(url, json={"description": self.antares_web_description_msg}, status_code=404)
             with pytest.raises(
                 ThermalMatrixUpdateError,
-                match=f"Could not upload matrix for cluster {self.thermal.name} inside area {self.area.id}: "
+                match=f"Could not upload data for cluster {self.thermal.name} inside area {self.area.id}: "
                 + self.antares_web_description_msg,
             ):
                 self.thermal.update_prepro_data_matrix(self.matrix)
@@ -227,7 +227,7 @@ def test_update_prepro_modulation_fail(self):
             mocker.post(url, json={"description": self.antares_web_description_msg}, status_code=404)
             with pytest.raises(
                 ThermalMatrixUpdateError,
-                match=f"Could not upload matrix for cluster {self.thermal.name} inside area {self.area.id}: "
+                match=f"Could not upload modulation for cluster {self.thermal.name} inside area {self.area.id}: "
                 + self.antares_web_description_msg,
             ):
                 self.thermal.update_prepro_modulation_matrix(self.matrix)
@@ -276,7 +276,7 @@ def test_update_series_fail(self):
             mocker.post(url, json={"description": self.antares_web_description_msg}, status_code=404)
             with pytest.raises(
                 ThermalMatrixUpdateError,
-                match=f"Could not upload matrix for cluster {self.thermal.name} inside area {self.area.id}: "
+                match=f"Could not upload series for cluster {self.thermal.name} inside area {self.area.id}: "
                 + self.antares_web_description_msg,
             ):
                 self.thermal.update_series_matrix(self.matrix)
@@ -325,7 +325,7 @@ def test_update_co2_cost_fail(self):
             mocker.post(url, json={"description": self.antares_web_description_msg}, status_code=404)
             with pytest.raises(
                 ThermalMatrixUpdateError,
-                match=f"Could not upload matrix for cluster {self.thermal.name} inside area {self.area.id}: "
+                match=f"Could not upload CO2Cost for cluster {self.thermal.name} inside area {self.area.id}: "
                 + self.antares_web_description_msg,
             ):
                 self.thermal.update_co2_cost_matrix(self.matrix)
@@ -374,7 +374,7 @@ def test_update_fuel_cost_fail(self):
             mocker.post(url, json={"description": self.antares_web_description_msg}, status_code=404)
             with pytest.raises(
                 ThermalMatrixUpdateError,
-                match=f"Could not upload matrix for cluster {self.thermal.name} inside area {self.area.id}: "
+                match=f"Could not upload fuelCost for cluster {self.thermal.name} inside area {self.area.id}: "
                 + self.antares_web_description_msg,
             ):
                 self.thermal.update_fuel_cost_matrix(self.matrix)