Hello SDB,
Please refer SAP help document on it,
Deleting Production Data Structures (PDS) in SAP SCM - Production Data Structure (PDS) - SAP Library
If you wish to delete production versions that originate from SAP R/3, proceed as follows:
Delete the production version in SAP R/3. Start the change transfer for the PDS.
The source of supply in SAP APO and the relevant PDS are deleted.
If orders exist in SAP APO, then the production version in SAP R/3 is deleted. However, the source of supply and relevant PDS are not deleted in SAP APO.
To deletion of locked production version then please implement these notes
2167226
2167228
Please refer
ECC's locked production version's effect on APO PDS - NEW NOTES
Best Regards,
R.Brahmankar