thank you but my problem continue...

i change the core code

standard_price = fields.Float(

'Cost', compute='_compute_standard_price',

inverse='_set_standard_price', search='_search_standard_price',

digits=(12,3), groups="base.group_user",

help = "Cost used for stock valuation in standard price and as a first price to set in average/FIFO.")

now i have 3 decimal in cost

but still rounding into 2 decimal

if i edit the product the cost now come with 3 decimal if a type 0.123 and i save odoo automatically round the cost into 0.120

why?

Hello,

hope it will work

goto sales configuration in that search your unit of measure and set rounding precision as 0.00100

thanks & regards