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FAR and DFARS › DFARS Part 204: Administrative and Information Matters › Subpart 204.16

DFARS 204.1671 Order of application for modifications.

The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

In plain English

This section explains that the numeric order of contract modifications may not match the order in which they actually take effect. It sets a specific sequence for applying modifications so the correct order of changes can be determined. This matters to contractors because it clarifies how to resolve conflicts when multiple modifications affect the same contract.

Applies to: Contractors with contracts or orders that have multiple modifications

Key terms: modifications · effective date · signature date · procuring contracting office · contract administration office

Written by AI from this section's text. A guide, not legal advice: the text below rules.

The text

(a) Circumstances may exist in which the numeric order of the modifications to a contract is not the order in which the changes to the contract actually take effect.

(b) In order to determine the sequence of modifications to a contract or order, the modifications will be applied in the following order—

(1) Modifications will be applied in order of the effective date on the modification;

(2) In the event of two or more modifications with the same effective date, modifications will be applied in signature date order; and

(3) In the event of two or more modifications with the same effective date and the same signature date, procuring contracting office modifications will be applied in numeric order, followed by contract administration office modifications in numeric order.

Sections that refer to it

  • 243.172 Application of modifications.

← 204.1670 Cross reference to Federal Procurement Data System. · 204.1700 Scope of subpart. →

Rule changes for DFARS Part 204

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.

DFARS 204.1671 Order of application for modifications · SpendQuery