diff --git a/src/locale/messages.en.json b/src/locale/messages.en.json
index b7b836bd09864cbe81f26ff922b9d154c1a98a70..85eed856593bae9fa8fb1147949f10b3c31c22bd 100755
--- a/src/locale/messages.en.json
+++ b/src/locale/messages.en.json
@@ -6,6 +6,7 @@
     "WARNING_ORIFICE_FREE_DOWNSTREAM_ELEVATION_POSSIBLE_SUBMERSION": "Downstream elevation is higher than orifice center elevation (%submergencePerc%% submergence)",
     "WARNING_NOTCH_SUBMERGENCE_GREATER_THAN_07": "Notch submergence (%submergencePerc%%) is higher than recommended boundary (70%)",
     "WARNING_SLOT_SUBMERGENCE_NOT_BETWEEN_07_AND_09": "Slot submergence (%submergencePerc%%) is not in the recommended boundaries (70 to 90%)",
+    "ERROR_STRUCTURE_SUBMERGENCE_LOWER_THAN": "Slot submergence (%submergencePerc%%) is lower than %min%%",
     "WARNING_WEIR_SUBMERGENCE_LOWER_THAN_08": "Weir submergence factor (%submergencePerc%%) is lower than the recommended boundary (80%)",
     "WARNING_INFO_COUNT_SHORT": "%d info(s)",
     "WARNING_WARNING_COUNT_SHORT": "%d warning(s)",
diff --git a/src/locale/messages.fr.json b/src/locale/messages.fr.json
index 1b2892173b6f6383f61f07fac4766fbc1288b0b5..8d35d05b35ceee270b715447bdfb680b4ac04d2b 100755
--- a/src/locale/messages.fr.json
+++ b/src/locale/messages.fr.json
@@ -6,6 +6,7 @@
     "WARNING_ORIFICE_FREE_DOWNSTREAM_ELEVATION_POSSIBLE_SUBMERSION": "La cote de l'eau aval est plus élevée que la cote du centre de l'orifice (ennoiement %submergencePerc% %)",
     "WARNING_NOTCH_SUBMERGENCE_GREATER_THAN_07": "L'ennoiement de l'échancrure (%submergencePerc% %) est supérieur à la limite conseillée de 70 %",
     "WARNING_SLOT_SUBMERGENCE_NOT_BETWEEN_07_AND_09": "L'ennoiement de la fente (%submergencePerc% %) ne se situe pas entre les valeurs limites conseillées de 70 à 90 %",
+    "ERROR_STRUCTURE_SUBMERGENCE_LOWER_THAN": "L'ennoiement de la fente (%submergencePerc% %) est inférieur à %min% %",
     "WARNING_WEIR_SUBMERGENCE_LOWER_THAN_08": "L'ennoiement du seuil noyé (%submergencePerc% %) est inférieur à la limite conseillée de 80% ",
     "WARNING_INFO_COUNT_SHORT": "%d info(s)",
     "WARNING_WARNING_COUNT_SHORT": "%d avertissement(s)",