Hi Anurag,
Can you check if entries are made for the product in both the T-Lanes from Plant to DC and they are not locked.
You can try to manually enter a receipt for the Product at DC, if it populates without prompting to select a source of supply, a T-Lane is missing. If it prompts to select a source of supply, you would be able to scroll through tabs and look if quota arrangement is displayed.
Regards