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With 12 months you can use Aptamil Profutura 2 or Aptamil Kindermilch 1+. Which to prefer depends on the general nutrition of your baby. If it still needs milk as an entire meal, you should rather use Aptamil 2, because it is more satisfying.
If your baby is already eating normal family food very well, and is satisfied by it, you may give Aptamil 1+, because this is just a drink to supply your baby with important milk ingredients but it is not satisfying as a meal anymore.
Aptamil Kindermilch 1+ is recommended for children from 1 year upwards, that eat already enough familiy food. Kindermilch is not a complete meal, but an additional drink. Therefore it should not have so many calories.