General Services Administration Federal Government computer system that is "FOR OFFICIAL USE ONLY | A unilateral modification is a contract modification that is signed only by the contracting officer |
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A bilateral modification supplemental agreement is a contract modification that is signed by the contractor and the contracting officer | Bilateral modifications are used to- 1 Make negotiated equitable adjustments resulting from the issuance of a change order; 2 Definitize letter contracts; and 3 Reflect other agreements of the parties modifying the terms of contracts |