unnecessary; need not; there is no need to
Used in the pattern 〜には及ばない to say that something is not necessary or that one need not go to the trouble. Often polite and somewhat formal.
There is no need for you to come all this way.
You don't need to worry.
cannot match; not up to; unattainable
Used in the pattern 〜には及ばない to mean that one cannot equal or reach the level of someone or something. Often used in comparisons.
I can't match his ability.
この製品はあのブランドの品質には及ばない。
This product doesn't come up to the quality of that brand.