Let’s get technical!
Thanks to a recent news drop regarding all things Pokémon Scarlet and Pokémon Violet, The Pokémon Company International has revealed in the upcoming titles, players will actually be able to create TMs thanks to the likes of a TM Machine, which can be found at every Pokémon Centre. It has been said players will require the correct resources to fabricate their desired TMs, which includes League Points.
In addition to the reveal of TM creation, The Pokémon Company International have put out the following information:
A Technical Machine (or TM for short) is a tool that allows Pokémon to learn new moves. In these titles, there is a piece of equipment installed at every Pokémon Center called a TM Machine, which allows Trainers to make their own TMs.
TMs can be made using League Points (LP for short) and materials dropped by wild Pokémon after battle. LP can be obtained as you advance the story or by trading in materials from Pokémon. Find moves you want your Pokémon to learn at the TM Machine and try making a TM!
The selection of TMs available for you to make grows as you continue your adventure. A single TM can only be used once, but if you have enough LP and the right materials from Pokémon, you can make as many as you like using the TM Machine. Think carefully about what moves you want to have your Pokémon learn to expand your strategic arsenal.