diff --git a/web/client/translations/data.de-DE.json b/web/client/translations/data.de-DE.json
index df6b185b0e..c039279cc8 100644
--- a/web/client/translations/data.de-DE.json
+++ b/web/client/translations/data.de-DE.json
@@ -1576,7 +1576,7 @@
                 "dropZone": {
                     "heading": "<p> <h4> Legen Sie hier Ihre Kartenkonfigurations- oder Vektordateien ab </h4> <small> oder nutzen Sie </small> </p>",
                     "selectFiles": "Dateien auswählen...",
-                    "infoSupported": "<p> <small> Unterstützte Dateien zur Kartenkonfiguration: MapStore Legacy-Format, WMC.<br />Unterstützte Vektor-Layer-Dateien: Shapefiles (müssen in einem Zip-Archiv enthalten sein), KML / KMZ, GPX, GeoJSON oder Anmerkungen </small> </p>",
+                    "infoSupported": "<p> <small> Unterstützte Dateien zur Kartenkonfiguration: MapStore Legacy-Format, WMC.<br />Unterstützte Vektor-Layer-Dateien: Shapefiles (müssen in einem Zip-Archiv enthalten sein), KML / KMZ, GPX, GeoJSON oder Anmerkungen. (Referenzsystem muss EPSG: 4326 für KML/KMZ, GPX sein) </small> </p>",
                     "note": "<p> <small> <i> <strong> Hinweis </strong>: Die aktuelle Karte wird bei der Verwendung von Kartenkonfigurationsdateien überschrieben </i> </small> </p>"
                 },
                 "errors": {
diff --git a/web/client/translations/data.en-US.json b/web/client/translations/data.en-US.json
index d0d7e09dd9..1d20bce87c 100644
--- a/web/client/translations/data.en-US.json
+++ b/web/client/translations/data.en-US.json
@@ -1537,7 +1537,7 @@
             "dropZone": {
                 "heading": "<p><h4>Drop your map context or vector files here</h4><small>or</small></p>",
                 "selectFiles": "Select files...",
-                "infoSupported": "<p><small>Supported map context files: MapStore legacy format, WMC<br />Supported vector layer files: shapefiles (must be contained in zip archives), KML/KMZ, GeoJSON, Annotations or GPX</small></p>",
+                "infoSupported": "<p><small>Supported map context files: MapStore legacy format, WMC<br />Supported vector layer files: shapefiles (must be contained in zip archives), KML/KMZ, GeoJSON, Annotations or GPX. (Reference System must be EPSG: 4326 for KML/KMZ, GPX)</small></p>",
                 "note": "<p><small><i><strong>note</strong>: current map will be overridden in case of map context files</i></small></p>"
             },
             "errors": {
diff --git a/web/client/translations/data.es-ES.json b/web/client/translations/data.es-ES.json
index 05ee0381eb..ebfeb9b84b 100644
--- a/web/client/translations/data.es-ES.json
+++ b/web/client/translations/data.es-ES.json
@@ -1538,7 +1538,7 @@
             "dropZone": {
                 "heading": "<p> <h4> Suelta contextos de mapas o archivos vectoriales aquí </h4> <small> o </small> </p>",
                 "selectFiles": "Selecciona archivos...",
-                "infoSupported": "<p> <small> Archivos de contexto de mapas admitidos: formato heredado MapStore, WMC<br /> Archivos de capa vectorial soportados: shapefiles (deben estar en archivos comprimidos), KML / KMZ, GPX, GeoJSON o Annotations </small> </p>",
+                "infoSupported": "<p> <small> Archivos de contexto de mapas admitidos: formato heredado MapStore, WMC<br /> Archivos de capa vectorial soportados: shapefiles (deben estar en archivos comprimidos), KML / KMZ, GPX, GeoJSON o Annotations. (El sistema de referencia debe ser EPSG: 4326 para KML/KMZ, GPX) </small> </p>",
                 "note": "<p> <small> <i> <strong> nota </strong>: el mapa actual se sobrescribe en el caso de nuevos contextos de mapa </i> </small> </p>"
             },
             "errors": {
diff --git a/web/client/translations/data.fr-FR.json b/web/client/translations/data.fr-FR.json
index 61c8d8f522..26ad501a5c 100644
--- a/web/client/translations/data.fr-FR.json
+++ b/web/client/translations/data.fr-FR.json
@@ -1538,7 +1538,7 @@
             "dropZone": {
                 "heading": "<p> <h4> Déposez vos contextes cartographiques ou vos fichiers vectoriels ici </h4> <small> ou </small> </p>",
                 "selectFiles": "Sélectionnez des fichiers...",
-                "infoSupported": "<p><small>Fichiers de contextes pris en charge : format hérité MapStore, WMC<br />Fichiers vectoriels pris en charge : fichier de formes (doivent être contenus dans des archives zip), KML/KMZ, GeoJSON, Annotations ou GPX</small></p>",
+                "infoSupported": "<p><small>Fichiers de contextes pris en charge : format hérité MapStore, WMC<br />Fichiers vectoriels pris en charge : fichier de formes (doivent être contenus dans des archives zip), KML/KMZ, GeoJSON, Annotations ou GPX. (Le système de référence doit être EPSG : 4326 pour KML/KMZ, GPX)</small></p>",
                 "note": "<p><small><i><strong> note </strong>: la carte actuelle sera remplacée dans le cas des fichiers de contextes cartographiques</i></small></p>"
             },
             "errors": {
diff --git a/web/client/translations/data.is-IS.json b/web/client/translations/data.is-IS.json
index 0a63e5d63a..94698ab8d2 100644
--- a/web/client/translations/data.is-IS.json
+++ b/web/client/translations/data.is-IS.json
@@ -1418,7 +1418,7 @@
       "dropZone": {
         "heading": "<p><h4>Drop your map context or vector files here</h4><small>or</small></p>",
         "selectFiles": "Select files...",
-        "infoSupported": "<p><small>Supported map context files: MapStore legacy format, WMC<br />Supported vector layer files: shapefiles (must be contained in zip archives), KML/KMZ, GeoJSON, Annotations or GPX</small></p>",
+        "infoSupported": "<p><small>Supported map context files: MapStore legacy format, WMC<br />Supported vector layer files: shapefiles (must be contained in zip archives), KML/KMZ, GeoJSON, Annotations or GPX. (Reference System must be EPSG: 4326 for KML/KMZ, GPX)</small></p>",
         "note": "<p><small><i><strong>note</strong>: current map will be overridden in case of map context files</i></small></p>"
       },
       "errors": {
diff --git a/web/client/translations/data.it-IT.json b/web/client/translations/data.it-IT.json
index 9c2e32872f..2352bb78b2 100644
--- a/web/client/translations/data.it-IT.json
+++ b/web/client/translations/data.it-IT.json
@@ -1535,7 +1535,7 @@
             "dropZone": {
                 "heading": "<p> <h4> Rilascia qui i contesti di mappa o i file vettoriali </h4> <small> o </small> </p>",
                 "selectFiles": "Seleziona i file...",
-                "infoSupported": "<p> <small> File di contesti di mappa supportati: formato legacy di MapStore, WMC<br /> File di livello vettoriale supportati: shapefile (devono essere contenuti in archivi zip), KML / KMZ, GPX, GeoJSON o Annotazioni </small> </p>",
+                "infoSupported": "<p> <small> File di contesti di mappa supportati: formato legacy di MapStore, WMC<br /> File di livello vettoriale supportati: shapefile (devono essere contenuti in archivi zip), KML / KMZ, GPX, GeoJSON o Annotazioni. (Il sistema di riferimento deve essere EPSG: 4326 per KML/KMZ, GPX) </small> </p>",
                 "note": "<p> <small> <i> <strong> nota </strong>: la mappa corrente verrà sovrascritta in caso di nuovi contesti di mappa </i> </small> </p>"
             },
             "errors": {