How to handle cash rounding / swedish rounding?

[ced (Cédric Krier)]

issue1000 seems to indicate that setting the rounding on the currency is a working solution.

@udono

Country: Add another rounding preference which defines the smallest coin
used in the country. (lowest_physical_denomination)

I do not think it is a property of the country but a combination of the country and currency.

@udono

Sale and invoice: Add another total amount field rounded by
lowest_physical_denomination.

I do not think it should be a new field. It is only needed on the report so it can be computed when rendering.

@udono

Invoice: pay wizard indicates the use of lowest_physical_denomination and

adds automatically a write-off accounting move to the payment.

I think the automatic write-off is the right solution. But it should be part of a larger concept including the reconciliation.
There are different reconciliation case that should be managed with a write-off automatically:

• cash rounding
• currency exchange
• too small amount (which will be too expensive to request)