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["gde \(OpenERP\)" <909768@xxxxxxxxxxxxxxxxxx>]

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https://bugs.launchpad.net/bugs/909768

Title:
  MRP - rounding incorrect when using manufacturing efficiency

Status in OpenERP Addons (modules):
  New

Bug description:
  On OpenERP 6.0.3 with both web & GTK client:

  I face an error when I launch a Manufacturing order with a
  manufacturing efficency of 0.9.

  OpenERP orders 10% more of each components to make the final product.
  The system is ok when we have a quantity that have a decimal > 0.5
  because the purchase order generated is rounded to the superior unit.

  The problem appears when we have a number of component with decimal <
  0.5. The purchase order generated is rounded to the inferior unit.  So
  the manufacturing is never ready to produce.

  Steps to reproduce:
  - Install sales, purchase, mrp
  - create one product to produce and two components (each are in MTO)
  - Define a BoM for the product to produce with  1 components A and 3 components B
  - Define a manufacturing efficiency = 0.9

  - Create a manufacturing order for 2 product to produce
  ==> Components needed: 2.2 component A and 6.6 component B

  - Launch the scheduler to have the purchase order generated.
  - The PO generated is for 2 component A and 7 component B
  - Receive the components

  - Check the Manufacturing Order
  - Run the production for the 2 units of the product

  
  Problems:
  - Sometimes you can't produce because you do not have enough unit in stock (2 units of component A instead of 2.2)

  - Sometimes you can launch the production and produce but you will have one remaining line in the component to consume with a quantity equal to 0.
  ==> Impossible to complete the production (see screenshots)

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