exception not enough stock while all config seems ok

[Aline (OpenERP)]

Hello,

in v6.0 and in trunk, it seems that automatic procurement from minimum stock rules does not work.
the procurement is always in exception state "Not enough stock" while all the config seems good

steps to reproduce :

In a db with sales, purhcase, warehouse and mrp_jist installed :

1/ create a product with this config

    * stockable
    * make to stock
    * buy
    * set a supplier (only a name, no other rules)
    * specify a minimum stock rule (min 1, max 20)

2/ Create sale order with this product and confirm it
3/ In Warehouse > Schedulers > Procurement exceptions, order appears as an error (also appears in web client log after confirm order)

The procurement should create the request for quotation to purchase and having stock

It is weird ! i tested other cases :

- setting make to order on the product -> work fines (it is why i think the bug come from min stock rules and not mrp_jit)
- Changing delay or other dates -> does not change anything
- i tried also to launch scheduler manually but it stays in exception