hello, 

After having made the complete turn of the forum I turn to you.

We use products subject to customs, with taxes at 4 digits after the comma.

Apart from my accounting would like only on purchase orders, invoices etc.
The subtotal and total is 2 digits after the decimal point.

I put 4 digits after the comma for the euro currency, and I tried from decimal precision to create a new record, put the field name and 2 digits after the comma but nothing changes.

I'm on odoo.sh version 15

thank you