New York Uniform Commercial Code Law Section 1-306 - Waiver or Renunciation of Claim or Right After Breach.

Section 1--306. Waiver or Renunciation of Claim or Right After Breach.
A claim or right arising out of an alleged breach may be discharged in
  whole  or  in  part  without consideration by agreement of the aggrieved
  party in an authenticated record.

Last modified: February 3, 2019