diff --git a/l10n_ar_sale/models/sale_order.py b/l10n_ar_sale/models/sale_order.py
index e04c8870..ec5ed3f3 100644
--- a/l10n_ar_sale/models/sale_order.py
+++ b/l10n_ar_sale/models/sale_order.py
@@ -57,12 +57,10 @@ def _get_sale_checkbook(self):
     def create(self, vals):
         for val in vals:
             if self.env.user.has_group('l10n_ar_sale.use_sale_checkbook') and \
-                val.get('name', _('New')) == _('New') and \
-                    val.get('sale_checkbook_id'):
+                val.get('sale_checkbook_id'):
                 sale_checkbook = self.env['sale.checkbook'].browse(
                     val.get('sale_checkbook_id'))
-                val['name'] = sale_checkbook.sequence_id and\
-                    sale_checkbook.sequence_id._next() or _('New')
+                val['name'] = sale_checkbook.sequence_id._next() or _('New')
         return super(SaleOrder, self).create(vals)
 
     def _compute_tax_totals(self):
diff --git a/l10n_ar_sale_order_type/models/sale_order.py b/l10n_ar_sale_order_type/models/sale_order.py
index 9cdeee84..d6da0ac2 100644
--- a/l10n_ar_sale_order_type/models/sale_order.py
+++ b/l10n_ar_sale_order_type/models/sale_order.py
@@ -27,8 +27,9 @@ def write(self, vals):
                         record.state in {"draft", "sent"}
                         and record.type_id.sequence_id != sale_checkbook.sequence_id
                     ):
+                        number_next = sale_checkbook.sequence_id.number_next_actual
                         new_vals = vals.copy()
-                        new_vals["name"] = sale_checkbook.sequence_id._next() or _('New')
+                        new_vals["name"] = sale_checkbook.sequence_id.get_next_char(number_next)
                         super(SaleOrder, record).write(new_vals)
                     else:
                         super(SaleOrder, record).write(vals)