In some states, subcapital is a realistic term like those having high court/legislature branches in non capital cities like
(MP-Jabalpur/Indore/Gwalior,
UP- Allahabad
CG- Bilaspur,
Odisha-Cuttack,
Rajasthan-Jodhpur,...
more...
Kerala-Ernakulam,
Maharashtra-Nagpur,
J&K-Jammu/Shrinagar) and in some its just a phrase like here in Jharkhand.. (dumka being a sub capital is just a phrase coined by this reporter, with bigger cities like jamshedpur dhanbad existing and no judiciary/legislature present there)