The law does not prevent the storage of gas cylinders beyond 100 kg. The law requires that if you have more than 100 kg of LPG, you need to obtain a license from PESO.
Latest Revision on LPG Storage
The latest revision states that you do not need a license for storing gas cylinders that are connected to a manifold complying with the relevant IS standards. If you have a manifold that meets the correct standards in terms of design, specifications, etc., then you don't need a license. Otherwise, you need to acquire a license for storage.