# 543.171 Changes in commercial supplier agreements.

(a) Commercial supplier agreements must be modified if the updated terms are material as defined in 552.212-4(w)(1)(iv) or 552.232-78(a)(6).

(b) When authorizing a contract modification to update commercial supplier agreement terms, the contracting officer must consider the impact to the Government's rights and negotiate the terms if necessary.

(c) The contracting officer is responsible for maintaining a current copy of the commercial supplier agreement in the contract file.