Hello, I am using Odoo 14, and I have purchased and am using your module. Now, I am facing an issue where if a product with a Lots/Seral Number undergoes multiple Manufacturing Orders  and Unbuild Orders , the system encounters an error during the outbound delivery process, preventing successful shipment. I hope you can optimize and resolve this issue. 

Odoo Server Error
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 683, in dispatch
    result = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 359, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 347, in checked_call
    result = self.endpoint(*a, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 912, in __call__
    return self.method(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 531, in response_wrap
    response = f(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1390, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1382, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 399, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 386, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/stock/models/stock_quant.py", line 204, in write
    return super(StockQuant, self).write(vals)
  File "../build/oejia_weshop/od13.py", line 33, in write
  File "../build/task_queue/od13.py", line 33, in write
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3703, in write
    fields[0].determine_inverse(real_recs)
  File "/usr/lib/python3/dist-packages/odoo/fields.py", line 1187, in determine_inverse
    getattr(records, self.inverse)()
  File "/usr/lib/python3/dist-packages/odoo/addons/stock/models/stock_quant.py", line 131, in _set_inventory_quantity
    move._action_done()
  File "/roaddons/real_costing_method/models/product.py", line 336, in _action_done
    return super(StockMove, self)._action_done(cancel_backorder)
  File "/usr/lib/python3/dist-packages/odoo/addons/stock_account/models/stock_move.py", line 271, in _action_done
    stock_valuation_layers |= getattr(todo_valued_moves, '_create_%s_svl' % valued_type)()
  File "/roaddons/real_costing_method/models/product.py", line 289, in _create_out_svl
    svl_vals = move.product_id._prepare_out_svl_vals(forced_quantity or valued_quantity, move.company_id, move)
  File "/roaddons/real_costing_method/models/product.py", line 86, in _prepare_out_svl_vals
    fifo_vals = self._run_fifo(abs(quantity), company, move)
  File "/roaddons/real_costing_method/models/product.py", line 212, in _run_fifo
    assert qty_to_take_on_candidates > 0
Exception

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

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 639, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 315, in _handle_exception
    raise exception.with_traceback(None) from new_cause
AssertionError

/

For V14 Demo

URL: http://206.189.188.206:8014/
DB for Odoo Enterprise   =====>  Demo_EE

DB for Odoo Community =====>  Demo_CE

Username: demo

Password: demo

hello there, what a great app you have. This is gonna solve my problems with the FIFO costing method from Odoo. Can I request a demo, I want to try several cases, for example returning a product, thank you :D

I can't reply to the comment above haha, but I'm using v14, both CE and EE, thank you..

hello there, what a great app you have. This is gonna solve my problems with the FIFO costing method from Odoo. Can I request a demo, I want to try several cases, for example returning a product, thank you :D

When can you make it for V15?

We bought it for V14 and it is working well, but is it ready for V15?

I have tested this and it does not work, whem you have more than 1 cost in 1 lot. If you have Lot A with product X qty 5 cost 5 and Lot A product X qty 5 cost 7. If you make sale order product A qty 7 on confirmation you get singleton error.