As per title is it possible to do the manual tax adjustment from the Invoice form?
Tried to change the attributes of amount_tax field:
class account_invoice(models.Model):
_inherit = ['account.invoice']
amount_tax = fields.Monetary(string='Tax',
store=True, readonly=False, compute='_compute_amount')
This gives an opportunity to change it but it is only visible on the current view(field is not connected to chart of accounts in any way).
How would you do it to have the charts of accounts updated? Changing tax per line?
I do not understand your question or problem.
My accountant want to manualy adjust the tax by editing the tax field. The problem is this is not reflecting in the chart of accounts and other parts of accounting