Dear Ravi,
In order to plan your stock at storage location level, please use the Transaction Code: MMSC for the Material / Plant.
Tcode: MMSC will list you the Storage Location that exist for the for the Material / Plant.
Here in the MRP field set the value as 2 (storage location stock planned separately) which is for planning at storage location level.
"By planning storage location stock separately
If storage location stock is planned separately, the storage location is replenished with goods if the stock falls below the reorder point."
I hope this will solve your requirement.
Regards,
Shyam