In contrast, the 2005 Unification Treaty between the Norwegian and British Governments, which establishes a framework for all overestimated reservoirs, is not specific to a particular reservoir and therefore does not impose new regulation rules. The absence of rules on new provisions in most contracts (and DDAJ) allows the parties to the cross-border UUOA to negotiate and agree on provisions for refixation without restrictions by the applicable Unification Treaty (or JDA). . . .