Add a patch to have analytic in case of writeoff in the register payment wizard

account_usability/invoice_register_payment_writeoff_analytic.diff

@@ -0,0 +1,33 @@
+diff --git a/addons/account/models/account_payment.py b/addons/account/models/account_payment.py
+index b1d8012329d..b8a8e2a673d 100644
+--- a/addons/account/models/account_payment.py
++++ b/addons/account/models/account_payment.py
+@@ -210,6 +210,7 @@ class account_payment(models.Model):
+     payment_difference = fields.Monetary(compute='_compute_payment_difference', readonly=True)
+     payment_difference_handling = fields.Selection([('open', 'Keep open'), ('reconcile', 'Mark invoice as fully paid')], default='open', string="Payment Difference", copy=False)
+     writeoff_account_id = fields.Many2one('account.account', string="Difference Account", domain=[('deprecated', '=', False)], copy=False)
++    writeoff_analytic_account_id = fields.Many2one('account.analytic.account', string="Difference Analytic Account", copy=False)
+ 
+     # FIXME: ondelete='restrict' not working (eg. cancel a bank statement reconciliation with a payment)
+     move_line_ids = fields.One2many('account.move.line', 'payment_id', readonly=True, copy=False, ondelete='restrict')
+@@ -431,6 +432,7 @@ class account_payment(models.Model):
+                 amount_currency_wo = -abs(amount_currency_wo)
+             writeoff_line['name'] = _('Counterpart')
+             writeoff_line['account_id'] = self.writeoff_account_id.id
++            writeoff_line['analytic_account_id'] = self.writeoff_analytic_account_id.id or False
+             writeoff_line['debit'] = debit_wo
+             writeoff_line['credit'] = credit_wo
+             writeoff_line['amount_currency'] = amount_currency_wo
+diff --git a/addons/account/views/account_payment_view.xml b/addons/account/views/account_payment_view.xml
+index 2460458fbaa..4065d8f9952 100644
+--- a/addons/account/views/account_payment_view.xml
++++ b/addons/account/views/account_payment_view.xml
+@@ -206,6 +206,8 @@
+                                 </div>
+                                 <field name="writeoff_account_id" string="Post Difference In"
+                                     attrs="{'invisible': [('payment_difference_handling','=','open')], 'required': [('payment_difference_handling', '=', 'reconcile')]}"/>
++                                <field name="writeoff_analytic_account_id" string="Post Difference In Analytic Account"
++                                    attrs="{'invisible': [('payment_difference_handling','=','open')]}"/>
+                             </group>
+                         </group>
+                     </sheet>