This Standard Document contains provisions to incorporate an assumption of the delegated obligations and an optional novation into the assignment agreement. Assumption Agreement – Evidences the transfer of an obligation on a Deed of Trust from one owner to another owner.This video can help you understand when to use a novation contract or an assignment. Once the Novation and this. This assignment and assumption agreement template includes a novation agreement and may be used to transfer an agreement from one party to another.