Only certain station types come with Carto services. For example, military outposts do not by default, while scientific ones do. You may be able to force some stations to adopt Carto by building first an orbital comms station, followed by an exploration hub. However, I have not yet tried this and cannot confirm. You will most likely need to follow the same "orbit body" rules that are in place for economy type influence to put it into a station that does not already have it.
I think most folks have not prioritized carto in their stations as much as they have been fretting over goods production, so if anybody else can add details, that would be great.