Why is it not possible to add both subspecies and variations with IDs, for example Agave americana ssp. americana var. americana… you can only add Agave americana ssp. americana, and you can only add var. if there are no ssp. options available (i.e. Searsia rigidia var. rigidia)
This question has been discussed before at: https://forum.inaturalist.org/t/are-varieties-in-subspecies-supported/23222
For what it’s worth, these aren’t higher but lower classifications.
(changed the title to make it a bit more clear)