diff --git a/loopback/locale/es.json b/loopback/locale/es.json
index ea83b36c4..f2acea939 100644
--- a/loopback/locale/es.json
+++ b/loopback/locale/es.json
@@ -252,5 +252,6 @@
 	"Receipt's bank was not found": "No se encontró el banco del recibo",
 	"This receipt was not compensated": "Este recibo no ha sido compensado",
 	"Client's email was not found": "No se encontró el email del cliente",
-	"Aplicación bloqueada por el usuario 9": "Aplicación bloqueada por el usuario 9"
-}
\ No newline at end of file
+	"Aplicación bloqueada por el usuario 9": "Aplicación bloqueada por el usuario 9",
+	"A supplier with the same name already exists. Change the country.": "Un proveedor con el mismo nombre ya existe. Cambie el país."
+}
diff --git a/modules/supplier/back/models/supplier.js b/modules/supplier/back/models/supplier.js
index 64c585b6a..cba220af8 100644
--- a/modules/supplier/back/models/supplier.js
+++ b/modules/supplier/back/models/supplier.js
@@ -116,13 +116,21 @@ module.exports = Self => {
     Self.observe('before save', async function(ctx) {
         const changes = ctx.data || ctx.instance;
         const orgData = ctx.currentInstance;
-
-        const socialName = changes.name || orgData.name;
         const hasChanges = orgData && changes;
-        const socialNameChanged = hasChanges
-         && orgData.socialName != socialName;
 
-        if ((socialNameChanged) && !isAlpha(socialName))
-            throw new UserError('The social name has an invalid format');
+        if (hasChanges) {
+            const name = changes.name || orgData.name;
+            const nameChanged = hasChanges && orgData.name != name;
+            const countryFk = changes.countryFk || orgData.countryFk;
+            const countryChanged = hasChanges && orgData.countryFk != countryFk;
+
+            if (nameChanged || countryChanged) {
+                if (!isAlpha(name)) throw new UserError('The social name has an invalid format');
+
+                const supplier = await Self.app.models.Supplier.findOne({where: {name, countryFk}, fields: ['id']});
+                if (supplier)
+                    throw new UserError('A supplier with the same name already exists. Change the country.');
+            }
+        }
     });
 };