Multiple bom for a single item

Hi
I have a scenario
i have 3 different boms to manufacture one particular item
for example :
to manufacture Part A
bom 1 Dia85 rod x length 100mm — will give me 10 nos — this is default and active
bom 2 Dia85 rod x length 200mm — will give me 20 nos — this is active ( i have also ticked the default check box )
bom 3 Dia85 rod x length 300mm — will give me 30 nos---- this is active ( i have also ticked the default check box )

All the above are stock items and are in stock
I send the material to Subcontract for processing to Part A
If i want to release a PO for 25 or 40 Nos, How do i go about it
Thanks and Regards
Hemanth

I guess what you are referring to is material transfer for production of Part A with multiple lengths (UoM) of sub assemblies and not really multiple BOMs for the same item. If thats the case you should configure UoM conversion for the sub assembly and use appropriate UoM while transferring the raw materials for production / sub contracting.

Hi Akurungadam
Thanks for the reply
Let me put it this way

items List
1)Part A
2)Dia85 rod x length 100mm
3)Dia85 rod x length 200mm
4)Dia85 rod x length 300mm

All the above 3 item can be used to produce Part A
so i create 3 boms
Bom1
Item to be manufactured or repacked ----Part A
qty - 10
material used
Dia85 rod x length 100mm - qty 01

Bom2
Item to be manufactured or repacked ----Part A
qty - 20
material used
Dia85 rod x length 200mm - qty 01

Bom3
Item to be manufactured or repacked ----Part A
qty - 30
material used
Dia85 rod x length 300mm - qty 01

so here the scenario is that i have 3 different raw material to produce Part A
which among the three is used depends on the stock availability
so if iam subcontracting it then the proceedure is as follows
i create a Purchase Order for Part A for 20 Nos
by default in the Purchase Order Form, in the Supplied Items table, Raw Material used is as per BOM1
(Imagine that BOM1 Raw material Dia85 rod x length 100mm is not in stock)

then i do a Stock Entry — Material transfer to Subcontract
here the stock entry is linked to PO
here by default, BOM1 raw material is populated
since BOM1 raw material is out of stock, i select BOM2 raw material (Dia85 rod x length 200mm)
the if i submit, it gives error
Thanks and regards
Hemanth