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 ?
Nobody knows how I can get a complete cost for a product that is made up of sub assemblies ?
Is the only way to do this really to start at the bottom level and manually enter costs so that the next level up can pick it up and then keep going up the tree until I get to the top level part ?
The thread: "MRP cost price calculation on bom" helps a bit especially when loading the suggested modules. Unfortunately I couldn't get it to work out the overall cost even though it picks up the cost of each sub BOM.
I tried those as well.
It doesn't appear to pick up the calculated cost of any sub BoMs though so it's still impossible to get a total cost including calculated cost of sub BoMs