Costing BOM and Mixed Costing

A product which is manufactured in-house has more than one production version. Each production version has its own BOM and Recipe. To calculate a blended standard cost, we will use mixed costing functionality and assign ratio to each production version. However we want to copy the BOM usage 1 (production) to BOM usage 6 (costing) and make changes only for costing purpose.
Hence each production version will have a BOM for production and equivalent BOM for Costing as follows:
Production Version/Procurement alternative
BOM for Production
BOM for Costing
1
Usage 1 / Alternative 1
Usage 6 / Alternative 1
2
Usage 1 / Alternative 2
Usage 6 / Alternative 2
If a process order is created with Usage 1 /Alternative 1, how does the system know to compare actual cost with procurement alternative with Usage 6 / Alternative 1 for the purpose of variance calculation?
Thank you,
Siva

Hi
Welcome to SDN
You dont have option to specify the Valuation type in BOM i.e. in the BOM of B, you can only specify A as the Input material... You cant specify C1 or C2
Hence, as a result, costing uses only the average price of C1 and C2 which is maintained in the Mat Master as a PLanned price
MIxed Costing as well as Split Valuation for Material B makes no sense in this case....
If you still want to have Mixed Costing & Splt Valuation in this case - You need to create one more material for Mat A i.e. Separate Mat codes for C1 and C2.. however, it will have its own challenges during MRP as to which material should be ordered, etc
br, Ajay M

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