product_historical_margin calculates wrong value for customer refunds

Bug #1205348 reported by Christoph Uhl
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Camptocamp Addons
Undecided
Unassigned

Bug Description

Hi at all,

we are running openERP 6.1.1 and have installed the following addons made by camptopcamp:

- product_get_cost_field
- product_historical_margin
- product_historical_margin_report

I'm calculating our margin with this view: ACCOUNTING / Reporting / Statistic Reports / Invoices Analysis

The addon does calculate the margin correctly when I only sum up all invoices (by clicking on "INVOICE"). All values (turnover, total cost and margin) are correct.. If I only calculate the customer refunds or invoices and refunds together, the turnover, the cost and the margin is wrong. All values do not make any sense. Unfortunately I cannot reconstruct it.

Would be great if someone could help me with this problem!

Kind regards

Christoph Uhl

Revision history for this message
Christoph Uhl (christoph-uhl) wrote :

Hi,

I just had a look again at the module and now I can describe the bug better:

There is a problem with the plus/minus signs.

Current state:

situation: We've got a refund of Euro 1000 net. Cost price was Euro 800 net.

If I only calculate the refunds (without invoices), I'll get the following results

net amount: -1000
total cost: -800
real margin: +1800

How it should be:

net amount: -1000
total cost: +800
real margin: -200

Would be really great if someone could have a look at this. Unfortunately I cannot fix this on my own. Thank you!

Kind regards

Christoph Uhl

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