Requirement to have Inventory Valuation OSP and Inventory Valuation Material for Costing Accounting

We have a requirement to bifurcate Inventory Valuation and WIP Valuation into Material and OSP (Outside Processing) components across all transaction types — including Work Orders, Inventory Transactions, Sales Orders, etc. The costing and accounting entries should clearly distinguish between Material and OSP portions.

For example:
If Parent Item 1 has the following structure:

• Child 1 (Material)
• Child 2 (OSP)
• Child 3 (Material)
• Child 4 (Material), which further includes:
  • Subchild 1 (Material)
  • Subchild 2 (OSP)

Then, the inventory valuation and accounting should be capable of splitting the cost into Material and OSP components at all hierarchical levels.

Please suggest a suitable approach or help us in achieving the desired outcome within the Oracle Fusion Cloud environment.