The phrase "to require some modification" means that something needs to be changed or adjusted in some way.
Sentences with «to require some modification»
While on their own these changes in circumstance would not require a modification of custody there are circumstances that would. (thespruce.com)
After mixing with petroleum - derived fuels, the blend - stock does not require modifications to the existing distribution infrastructure. (sciencedaily.com)
Do make required modifications and changes in the data of the letter to suit your profile or requirement. (bestcoverletters.com)