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                            43.103 Types of contract modifications.
        
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FAC Number: 2024-03 Effective Date: 02/23/2024
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Subpart43.043.143.243.3
Section43.10143.10243.10343.10443.10543.10643.107
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43.103 Types of contract modifications.43.103 Types of contract modifications.       Contract modifications are of the following types:                                       (a)                   *Bilateral.* 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.                                                                             (b)                   *Unilateral.* A unilateral modification is a contract modification that is signed only by the contracting officer. Unilateral modifications are used, for example, to-                                                         (1) 								                Make administrative changes;                                                            (2) 								                Issue change orders;                                                            (3) 								                Make changes authorized by clauses other than a changes clause (*e.g.,* Property clause, Options clause, or Suspension of Work clause); and                                                            (4) 								                Issue termination notices.    **Parent topic:**  Subpart 43.1 - General
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