Add option no_debit_before_maturity on payment mode

account_payment_order/models/account_payment_mode.py

@@ -16,6 +16,12 @@ class AccountPaymentMode(models.Model):
 
     payment_order_ok = fields.Boolean(
         string='Selectable in Payment Orders', default=True)
+    no_debit_before_maturity = fields.Boolean(
+        string="Disallow Debit Before Maturity Date",
+        help="If you activate this option on an Inbound payment mode, "
+        "you will have an error message when you confirm a debit order "
+        "that has a payment line with a payment date before the maturity "
+        "date.")
     # Default options for the "payment.order.create" wizard
     default_payment_mode = fields.Selection([
         ('same', 'Same'),

account_payment_order/models/account_payment_order.py

@@ -221,6 +221,21 @@ class AccountPaymentOrder(models.Model):
                 # No payment date in the past
                 if requested_date < today:
                     requested_date = today
+                # inbound: check option no_debit_before_maturity
+                if (
+                        order.payment_type == 'inbound' and
+                        order.payment_mode_id.no_debit_before_maturity and
+                        payline.ml_maturity_date and
+                        requested_date < payline.ml_maturity_date):
+                    raise UserError(_(
+                        "The payment mode '%s' has the option "
+                        "'Disallow Debit Before Maturity Date'. The "
+                        "payment line %s has a maturity date %s "
+                        "which is after the computed payment date %s.") % (
+                            order.payment_mode_id.name,
+                            payline.name,
+                            payline.ml_maturity_date,
+                            requested_date))
                 # Write requested_date on 'date' field of payment line
                 payline.date = requested_date
                 # Group options

account_payment_order/views/account_payment_mode.xml

@@ -11,6 +11,8 @@
         <group name="main" position="after">
             <group name="payment_order_options" string="Options for Payment Orders">
                 <field name="payment_order_ok"/>
+                <field name="no_debit_before_maturity"
+                    attrs="{'invisible': ['|', ('payment_type', '!=', 'inbound'), ('payment_order_ok', '!=', True)]}"/>
                 <field name="group_lines"/>
             </group>
             <group name="payment_order_create_defaults" string="Select Move Lines to Pay - Default Values">