Under GST, an additional place of business can only be registered within the same state as your primary registration. If you need to temporarily store goods (25-30 days) in another state, you must obtain separate GST registration for that location if any supply is made from there. Alternatively, you can conduct interstate sales from your registered location, issuing a tax invoice with IGST.
22 October 2021
If the supply will be made from the temporary place, you need to get registration for that place also. You can't supply in the state without registration.