Hi Pyare,
Another option to show the extra semi-finished product at the subcontractor is to issue another subcontract PO for the semi-finished product. But check the SC Vend box and enter the subcontractor number in the Vendor box:
When you post the GR against the PO, the produced semi-finished good will post directly to the Material Provided to Vendor bucket under the purchasing plant of the Subcontract PO. This will also consume the required amount of the raw material component from the Material Provided to Vendor bucket.
Please note that the Semi-finished material will show under the purchsing plant according to the subcontract PO. I hope this helps.
Chris