I'm trying to figure out how the costs accumulate for a BOM which is made up of sub BOMs.
I have a product, TD which requires 2 SB plus some other product parts, each SB requires 3 MP plus some other parts, each MP is made up of parts.
TD, SB and MP are all Normal BOMs
So, for the cost structure of a TD I have something like this
TD --- SB --- MP
--- MP
--- MP
SB --- MP
--- MP
--- MP
To simplify things, let's just assume materials, no routings attached.
A MP has £6 of parts, a SB adds a further £20 of parts and a TD adds £50 of parts. Total costs accumulated for a SB should be £38 (£20 + (3 x £6)
Total costs accumulated for a TD should be £126 (£50 + (2 x £38)
Except when I ask for the Product Cost Structure of a TD OpenERP tells me that it's £50 and costs a SB as £0. In the same way, the Product Cost Structure of a SB shows as £20 with a MP costing £0. The Product Cost Structure of a MP is correctly shown as £6.
Am I missing something or is this a bug ?
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