Other than as permitted pursuant to the Indenture, neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an agreement or agreements in writing entered into by the Collateral Agent, the Trustee and the Grantor or Grantors with respect to which such waiver, amendment or modification is to apply, subject to any consent that may be required in accordance with Section 9.02 of the Indenture.