this case is an exception; in this case, it does not apply
Used to state that a general rule or statement does not hold in the current specific situation. Often follows a general principle, then introduces an exception.
See also: この限りでない (このかぎりでない) · 限り (かぎり)
Normally returns are not accepted, but this case is an exception.
規則では禁止されているが、緊急時はこの限りではない。
It is prohibited by the rules, but in an emergency this does not apply.