diff --git a/ci4/app/Models/Configuracion/SeriesFacturasModel.php b/ci4/app/Models/Configuracion/SeriesFacturasModel.php
index effb0685..0999b0a4 100644
--- a/ci4/app/Models/Configuracion/SeriesFacturasModel.php
+++ b/ci4/app/Models/Configuracion/SeriesFacturasModel.php
@@ -31,9 +31,17 @@ class SeriesFacturasModel extends \App\Models\BaseModel
             "label" => "SeriesFacturas.nombre",
             "rules" => "trim|required|max_length[255]",
         ],
+        "tipo" => [
+            "label" => "SeriesFacturas.tipo",
+            "rules" => "required",
+        ],
         "formato" => [
             "label" => "SeriesFacturas.nombre",
             "rules" => "trim|required|max_length[255]",
+        ],
+        "next" => [
+            "label" => "SeriesFacturas.next",
+            "rules" => "required",
         ]
     ];
 
@@ -42,9 +50,15 @@ class SeriesFacturasModel extends \App\Models\BaseModel
             "max_length" => "SeriesFacturas.validation.nombre.max_length",
             "required" => "SeriesFacturas.validation.nombre.required",
         ],
+        "tipo" => [
+            "required" => "SeriesFacturas.validation.tipo.required",
+        ],
         "formato" => [
-            "max_length" => "SeriesFacturas.validation.nombre.max_length",
-            "required" => "SeriesFacturas.validation.nombre.required",
+            "max_length" => "SeriesFacturas.validation.formato.max_length",
+            "required" => "SeriesFacturas.validation.formato.required",
+        ],
+        "next" => [
+            "required" => "SeriesFacturas.validation.next.required",
         ],
 
     ];
diff --git a/ci4/app/Views/themes/vuexy/form/configuracion/series-facturas/_seriesFacturasFormItems.php b/ci4/app/Views/themes/vuexy/form/configuracion/series-facturas/_seriesFacturasFormItems.php
index fcb274de..aabdaf4a 100644
--- a/ci4/app/Views/themes/vuexy/form/configuracion/series-facturas/_seriesFacturasFormItems.php
+++ b/ci4/app/Views/themes/vuexy/form/configuracion/series-facturas/_seriesFacturasFormItems.php
@@ -44,7 +44,8 @@
             <label for="tipo" class="form-label">
                 <?= lang('SeriesFacturas.next') ?>*
             </label>
-            <input type="text"
+            <input type="number"
+                   step="1"
                    id="next"
                    name="next"
                    class="form-control"