diff --git a/addons/account/models/account_invoice.py b/addons/account/models/account_invoice.py
index ec949502f6b..7e43efa745f 100644
--- a/addons/account/models/account_invoice.py
+++ b/addons/account/models/account_invoice.py
@@ -42,7 +42,7 @@ class AccountInvoice(models.Model):
     _order = "date_invoice desc, number desc, id desc"
 
     @api.one
-    @api.depends('invoice_line_ids.price_subtotal', 'tax_line_ids.amount', 'currency_id', 'company_id', 'date_invoice')
+    @api.depends('invoice_line_ids.price_subtotal', 'tax_line_ids.amount', 'currency_id', 'company_id', 'date_invoice', 'type')
     def _compute_amount(self):
         self.amount_untaxed = sum(line.price_subtotal for line in self.invoice_line_ids)
         self.amount_tax = sum(line.amount for line in self.tax_line_ids)
diff --git a/addons/point_of_sale/models/pos_order.py b/addons/point_of_sale/models/pos_order.py
index fd2794b9d35..54f14046e17 100644
--- a/addons/point_of_sale/models/pos_order.py
+++ b/addons/point_of_sale/models/pos_order.py
@@ -708,7 +708,7 @@ class PosOrderLine(models.Model):
         return line
 
     company_id = fields.Many2one('res.company', string='Company', required=True, default=lambda self: self.env.user.company_id)
-    name = fields.Char(string='Line No', required=True, copy=False, default=lambda self: self.env['ir.sequence'].next_by_code('pos.order.line'))
+    name = fields.Char(string='Line No', required=True, copy=False)
     notice = fields.Char(string='Discount Notice')
     product_id = fields.Many2one('product.product', string='Product', domain=[('sale_ok', '=', True)], required=True, change_default=True)
     price_unit = fields.Float(string='Unit Price', digits=0)
@@ -721,6 +721,31 @@ class PosOrderLine(models.Model):
     tax_ids = fields.Many2many('account.tax', string='Taxes', readonly=True)
     tax_ids_after_fiscal_position = fields.Many2many('account.tax', compute='_get_tax_ids_after_fiscal_position', string='Taxes')
 
+    @api.model
+    def create(self, values):
+        if values.get('order_id') and not values.get('name'):
+            # set name based on the sequence specified on the config
+            config_id = self.env['pos.order'].browse(values['order_id']).session_id.config_id.id
+            # HACK: sequence created in the same transaction as the config
+            # cf TODO master is pos.config create
+            # remove me saas-15
+            self.env.cr.execute("""
+                SELECT s.id
+                FROM ir_sequence s
+                JOIN pos_config c
+                  ON s.create_date=c.create_date
+                WHERE c.id = %s
+                  AND s.code = 'pos.order.line'
+                LIMIT 1
+                """, (config_id,))
+            sequence = self.env.cr.fetchone()
+            if sequence:
+                values['name'] = self.env['ir.sequence'].browse(sequence[0])._next()
+        if not values.get('name'):
+            # fallback on any pos.order sequence
+            values['name'] = self.env['ir.sequence'].next_by_code('pos.order.line')
+        return super(PosOrderLine, self).create(values)
+
     @api.depends('price_unit', 'tax_ids', 'qty', 'discount', 'product_id')
     def _compute_amount_line_all(self):
         for line in self:
diff --git a/addons/purchase/purchase.py b/addons/purchase/purchase.py
index e5dca8ce4f2..2e9ce1d4d8d 100644
--- a/addons/purchase/purchase.py
+++ b/addons/purchase/purchase.py
@@ -641,15 +641,16 @@ class PurchaseOrderLine(models.Model):
             diff_quantity = line.product_qty
             for procurement in line.procurement_ids:
                 procurement_qty = procurement.product_uom._compute_qty_obj(procurement.product_uom, procurement.product_qty, line.product_uom)
-                tmp = template.copy()
-                tmp.update({
-                    'product_uom_qty': min(procurement_qty, diff_quantity),
-                    'move_dest_id': procurement.move_dest_id.id,  #move destination is same as procurement destination
-                    'procurement_id': procurement.id,
-                    'propagate': procurement.rule_id.propagate,
-                })
-                done += moves.create(tmp)
-                diff_quantity -= min(procurement_qty, diff_quantity)
+                if float_compare(diff_quantity, 0.0, precision_rounding=line.product_uom.rounding) > 0:
+                    tmp = template.copy()
+                    tmp.update({
+                        'product_uom_qty': min(procurement_qty, diff_quantity),
+                        'move_dest_id': procurement.move_dest_id.id,  #move destination is same as procurement destination
+                        'procurement_id': procurement.id,
+                        'propagate': procurement.rule_id.propagate,
+                    })
+                    done += moves.create(tmp)
+                    diff_quantity -= min(procurement_qty, diff_quantity)
             if float_compare(diff_quantity, 0.0, precision_rounding=line.product_uom.rounding) > 0:
                 template['product_uom_qty'] = diff_quantity
                 done += moves.create(template)
diff --git a/doc/reference/orm.rst b/doc/reference/orm.rst
index 6a017d24e80..8815749b4d4 100644
--- a/doc/reference/orm.rst
+++ b/doc/reference/orm.rst
@@ -710,7 +710,7 @@ Model Reference
     .. automethod:: fields_get
     .. automethod:: fields_view_get
 
-    .. rubric:: ???
+    .. rubric:: Miscellaneous methods
 
     .. automethod:: default_get
     .. automethod:: copy