Hello,
Check that your production order had a Prodn Supervisor assigned to it in in Assignment tab and that production supervisor has the right production scheduling profile attached.
Production Scheduler - > Production Scheduling Profile Assignment is in OPJ9
Prodn Supervisor is maintained in work scheduling view of finished product, you can also maintain production scheduling profile directly here.
Then try releasing the order and your TR will be created.
Best Regards,
Ameya Beri