diff --git a/account.py b/account.py
--- a/trytond/trytond/modules/account_payment/account.py
+++ b/trytond/trytond/modules/account_payment/account.py
@@ -116,7 +116,7 @@ class MoveLine(metaclass=PoolMeta):
         account = Account.__table__()
         account_type = AccountType.__table__()

-        payment_amount = Sum(Coalesce(payment.amount, 0))
+        payment_amount = Coalesce(Sum(payment.amount), 0)
         main_amount = Abs(table.credit - table.debit) - payment_amount
         second_amount = Abs(table.amount_second_currency) - payment_amount
         amount = Case((table.second_currency == Null, main_amount),
@@ -130,7 +130,7 @@ class MoveLine(metaclass=PoolMeta):
             .join(account_type, condition=account.type == account_type.id)
             .select(table.id,
                 where=(account_type.payable | account_type.receivable),
-                group_by=(table.id, table.second_currency),
+                group_by=(table.id,),
                 having=Operator(amount, value)
                 ))
         return [('id', 'in', query)]