Hi,

In Odoo, multiple modules override the same method (action_confirm), but Odoo only executes the method from the last-loaded module unless they are chained properly using super().

In your case, the second custom module overrides action_confirm, but the super() call refers only to mrp.production, not to the previously customized version in your first module.

Make sure both custom modules call super() correctly, so Odoo can chain all overrides.

Module 1

class MrpProduction(models.Model):
    _inherit = 'mrp.production'

    def action_confirm(self):
        res = super().action_confirm()
        for rec in self:
            if not rec.division_line:
                raise ValidationError(_("Add Division"))
            if not rec.location_confirm:
                raise ValidationError("Confirm Location")
        return res

Module 2

class MrpProduction(models.Model):
    _inherit = 'mrp.production'

    def action_confirm(self):
        res = super().action_confirm()
        # You can add your conditions here
        return res

In Module 2, add Module 1 in the depends list in the __manifest__.py.--

Hope it helps.

Multiple approaches, depends on what you need to do. In your other module, you could do the super() call in an else condition to execute only if your conditions to process differently are not met:

def action_confirm(self):
	​ if your_condition:
	     for rec in self:
	​	​    self.do_your_stuff()
	​ else:
        return super(MrpProduction, self).action_confirm()

Or, for example, apply a context that can be checked where/whenever needed:

# Module A
def action_confirm(self):
    self = self.with_context(some_speaking_key=True)
    res = super(MrpProduction, self).action_confirm()
    for rec in self:
        if not rec.division_line:
            raise ValidationError(_("Add Division"))
        if not rec.location_confirm:
            raise ValidationError("Confirm Location ")
	​return res

# Module B
def action_confirm(self):
    if self._context.get('some_speaking_key'):
        ...