Question about recruitment regions

[Arkatreides]

I am not sure where this belongs, but it is something I have been investigating for my cards and I was wondering whether an EB member could give me an official answer to the following question:

If a unit can be recruited in a certain province by ONE faction, can it be recruited in that region by ALL the factions that can recruit it?

e.g. say a unit of Pezhetairoi can be recruited by the Macedonians in Pella, does that imply that every other faction that can recruit Pezhetairoi (i.e. Ptolemies, Seleucids, Epeiros, Baktria) can do so in Pella (assuming they can have the relevant MIC level there)?

Thanks in advance