All agreements that have been negotiated must be finalized in writing and placed in the contract for signature. All other agreements (verbal, e-mails, etc.) will not be enforceable. Negotiations are complete when you have signed contract offer(s) from the supplier(s). Ensure that those signing the contract have the proper authority to do so. This may have been provided in the supplier's proposal; however, validation binding signature authority may be requested from the supplier. Proceed to Chapter 29 - Award and Post-Award of IT Contracts of this manual, Award and Post-Award of IT Contracts, which discusses verifying any federal or Code of Virginiacompliance requirements that must be validated with supplier prior to award.