diff --git a/source/static/js/controller/invoices.js b/source/static/js/controller/invoices.js
index 82de42c..8710a5b 100644
--- a/source/static/js/controller/invoices.js
+++ b/source/static/js/controller/invoices.js
@@ -939,7 +939,6 @@ function set_product(data){
     }
     form.setValues({search_product_id: '', search_product_name: ''}, true)
 
-
     //~ Validate stock
     if(values.inventario){
         if(values.cantidad > values.existencia){
@@ -948,7 +947,6 @@ function set_product(data){
         }
     }
 
-
     if(row == undefined){
         grid.add(values)
     }else{
diff --git a/source/static/js/controller/tickets.js b/source/static/js/controller/tickets.js
index 438411f..80c4ef5 100644
--- a/source/static/js/controller/tickets.js
+++ b/source/static/js/controller/tickets.js
@@ -342,17 +342,32 @@ function agregar_producto(values){
         producto['valor_unitario'] = calcular_precio_con_impuestos(
             parseFloat(producto['valor_unitario']), taxes)
         producto['importe'] = producto['valor_unitario']
-        var id = grid.add(producto, 0)
-        edit_cant(id)
+        //~ var id = grid.add(producto, 0)
+        //~ edit_cant(id)
     }else{
         producto['cantidad'] = parseFloat(row.cantidad) + 1
         producto['descuento'] = parseFloat(row.descuento)
         producto['valor_unitario'] = parseFloat(row.valor_unitario)
         precio_final = producto['valor_unitario'] - producto['descuento']
         producto['importe'] = (precio_final * producto['cantidad']).round(DECIMALES)
-        grid.updateItem(row.id, producto)
+        //~ grid.updateItem(row.id, producto)
     }
     form.setValues({tsearch_product_key: '', tsearch_product_name: ''}, true)
+
+    //~ Validate stock
+    if(producto.inventario){
+        if(producto.cantidad > producto.existencia){
+            msg_error('No hay suficiente existencia de este producto')
+            return
+        }
+    }
+
+    if(row == undefined){
+        var id = grid.add(producto, 0)
+        edit_cant(id)
+    }else{
+        grid.updateItem(row.id, producto)
+    }
 }
 
 
@@ -417,6 +432,20 @@ function grid_tickets_details_before_edit_stop(state, editor){
             grid.unblockEvent()
             return true
         }
+
+        //~ Validate stock
+        if(row['inventario']){
+            if(cantidad > row['existencia']){
+                msg = 'No hay suficiente existencia de este producto'
+                msg_error(msg)
+                grid.blockEvent()
+                state.value = state.old
+                grid.editCancel()
+                grid.unblockEvent()
+                return true
+            }
+        }
+
         var valor_unitario = parseFloat(row['valor_unitario'])
         var descuento = parseFloat(row['descuento'])
     }
diff --git a/source/static/js/ui/tickets.js b/source/static/js/ui/tickets.js
index 9e51627..523b638 100644
--- a/source/static/js/ui/tickets.js
+++ b/source/static/js/ui/tickets.js
@@ -145,6 +145,8 @@ var grid_tdetails_cols = [
     {id: "importe", header:{text: 'Importe', css: 'center'}, width: 150,
         format: webix.i18n.priceFormat, css: 'right',
         footer: {content: 'summColumn', css: 'right_footer2'}},
+    {id: "inventario", hidden: true},
+    {id: "existencia", hidden: true},
 ]
 
 
@@ -478,4 +480,4 @@ var win_ticket_notes = {
         })
         $$('cmd_ticket_save_note').attachEvent('onItemClick', cmd_ticket_save_note_click)
     }
-}
\ No newline at end of file
+}