The phrase "to require some adjustment" means that a change or modification is needed in order to accommodate or adapt to a new situation or circumstance. Full definition
Such a process change requires adjustments in attitude on the part of both divorce professionals and their clients. (mediate.com)
In practice the benefit may be payable at the end of a shorter period than a year, which requires an adjustment of the formula. (en.wikipedia.org)
This is partly because cats can switch brands — and recipes within brands — much more quickly than dogs, which require an adjustment period whenever a new type of food is introduced. (petbusiness.com)