89555459_ners___Pokémon_Essentials_Wiki__What_it_means
[Comment] BattleID: 1 [What it means] 
If there are multiple versions of this trainer, then this number is the one used to distinguish one version from the others (see above). This should only be used for isolated battles against the same trainer (e.g. the rival who shows up in different places) or a trainer with the same name as another (e.g. Team Rocket Grunts). For regular trainers that stay in the same place that you can rebattle, don't use this comment and instead just rely on using multiple "Battle" comments.
Trainers - Pokémon Essentials Wiki
What it means