Hello,
Could please share the screen shot of OPUZ? In process order COR2 Capacity requirement and Automatic scheduling is active in Control tab.
Did you check the CIF application log if any application log in error is there.
Also note /SAPAPO/MVM > Select Model & Version > in both SNP and PP/DS you can define that orders may not be created without source of supply.
Read consulting SAP note 314816 - Manufacturing orders: Problems with operation data
Best Regards,
R.Brahmankar