Collocations for technicality - noun

mere, minor
legal, procedural
His conviction was reversed by the US Supreme Court on a procedural technicality.

understand
discuss, get into, go into (esp. BrE)
I don't want to go into all the technicalities just now.

on a technicality (= because of a technicality)
The court was forced to release him on a technicality.