Hi SAP PP User,
Please refer OSS knowledge base article 1893125 - "Production Version" functionality does not work for customizing planning type.
It is not intended to bring "Production Version" to customizing planning type for technical reason.
No new development will be done for SOP functionality.
The functionality has been moved and enhanced in SAP SCM(Supply Chain Management) APO(Advanced Planning and Optimization).
Regards,
R.Brahmankar