Hi,

once clicking on add cart or buy getting below error:

Traceback (most recent call last):
  File "/odoo/odoo-server/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/odoo/odoo-server/odoo/http.py", line 807, in dispatch
    r = self._call_function(**self.params)
  File "/odoo/odoo-server/odoo/http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/odoo/odoo-server/odoo/service/model.py", line 110, in wrapper
    raise ValidationError(tr(key, 'sql_constraint') or inst.pgerror)
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/odoo/odoo-server/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/odoo/odoo-server/odoo/http.py", line 807, in dispatch
    r = self._call_function(**self.params)
  File "/odoo/odoo-server/odoo/http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/odoo/odoo-server/odoo/service/model.py", line 110, in wrapper
    raise ValidationError(tr(key, 'sql_constraint') or inst.pgerror)
odoo.exceptions.ValidationError: Missing required fields on accountable sale order line.