Responsible organisation role: why multiple occurence?

[PeterParslow]

Responsible organisation role has "multiple" occurrence, but it is an implementation of ISO 19115's CI_ResponsibleParty.role, which can only occur once.

This has been the case since GEMINI 2 in 2009. Perhaps it was prescient in that ISO 19115-1 sort of supports this, because many different "responsibilities" (point of contact, maintenance contact, distributor, constraints, releasability...), can point to one "party".

But given that GEMINI adheres to the earlier ISO 19115, perhaps this should always have been single? It's impossible to encode multiple roles, so noone could have implemented multiple roles even when they wanted to.