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Re: functional change in v8 MRP, asking feedback from experts

by
Akretion, Raphael Valyi
- 08/29/2014 12:15:58
Hello Simon,


regarding virtual stock, I see no big difference. When confirmed, the Stock -> Virtual / Production move will already decrease the virtual stock as in previous releases.

Now virtual stocks had plenty of issues, mostly the fact that it sums all planed move at infinite date, like the virtual sock level would be considered enough if you would buy and receive some component even in 2 months, while in fact you may have not enough stock in the meanwhile. Getting the virtual stock levels right also suppose to be extremely clean in managing your procurements because any dangling procurement would screw virtual stock levels.
 
As a result many companies had chosen not to rely on the virtual stock for most of their forecasting. This is the case in the project where I'm working. Instead they use only real stock level and in fact they were using the production reservation move to physically reserve the components for production and hence get it reflected in the real stock level they use to take decision. So this is something that is not native in v8 anymore and where I'm asking advice or comments if that would not be a good move for Odoo/OpenERP.


Any other reaction about the removal of the production reservation picking in Odoo v8 ?


On Fri, Aug 29, 2014 at 12:36 PM, Simon Perkins <simon@willans.com> wrote:
Dear Raphael,
 
If a company has a long manufacturing time it is very useful to know how many parts are committed to orders in process. If I understand it correctly, the internal picking can be used to reduce the virtual stock to take account of those components and thus give how many components are available for new orders. If the process is only 1 stage this will not be possible?
 
Regards,

Simon Perkins

Managing Director

<IMG style="HEIGHT: 57px; WIDTH: 206px" border=0 hspace=0 alt="" src="cid:663282315@29082014-27D1" width=836 align=left height=134>


 

www.willans.com


Tel: 01327 857788


From: rvalyi@akretion.com [mailto:rvalyi@akretion.com]
Sent: 29 August 2014 16:01
To: Community
Subject: functional change in v8 MRP, asking feedback from experts

Dear community,


I don't report this as a bug because I'm not sure if there is a bug here, I'm in fact asking for feedback from the MRP expert arounds (Yes Ana that's for you).

In OpenERP/Odoo 6.1 or 7.0,
when you created a Manufacturing Order, for each bill of material component to consume it would:

1) reserve all components in an internal picking.
by default the reservation move was Stock -> Stock, but eventually you could hack it into Stock -> Some Production Location

2) remove all components from the stock by moving it to a virtual location. So for all components we had a second move: Stock -> Virtual / Production


All right, that was 6.1 or 7.0. It was complex and detailed. Eventually you could had discrepancy troubles if you had to change lot or quantity between the reservation picking and the consumed moves but you could work it out.


Now in v8,
things are simpler, for all components, it simply creates a move:
Stock -> Virtual / Production



So no more reservation picking. So if you wanted to move the components to some specific location to prepare the production, you should now set up or develop something. I tried to set up some pull route to create component reservations, but it forces passing through a procurement and a scheduler run so it seems a bit more bureaucratic and even error prone that what we had in 6.1 / 7.0.


So what do you think? It is ok to simply destroy the components now without a reservation move? Is it a simply a functional regression due to the WMS refactor? How would you go to reproduce the reservation move if you needed to?


--
Raphaël Valyi
Founder and consultant
+55 21 3942-2434


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--
Raphaël Valyi
Founder and consultant
+55 21 3942-2434