Pokémon Sleep has acknowledged that error code 001001 can occur when players pair both a Pokémon GO Plus + device and a compatible smartwatch. The issue prevents some users from importing sleep data as expected. The developers confirmed they have identified the cause and plan to address it in a future update, though no release date has been announced yet. Until then, affected players may need to rely on a single sleep tracking source. The official notice reassures users that a fix is in development as Pokémon Sleep continues expanding support for smartwatch integration and Pokémon GO Plus + connectivity.
Source: Official Pokémon Sleep news
Source: Pokemon
