What types of authority should I be look at that apply only to commercial acquisitions when a modification is required.
The clause at FAR 52.212-4, specifically paragraph (c), addresses changes to the terms and conditions of FAR Part 12 contracts. However, that is largely boilerplate content, as FAR Part 43 (Contract Modifications) applies to all types of contracts, including FAR Part 12 contracts. Thus, very little about modifications applies only to commercial acquisitions.
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