# Defense Federal Acquisition Regulation Supplement: Definition of Material Weakness (DFARS Case 2021-D006)
> **Defense Federal Acquisition Regulations System** · Final rule. · Published 2025-01-17 · Effective 2025-01-17 · 90 FR 5725
## Document
- **Document number:** 2025-00721
- **Category:** dfars-acquisition
- **Sub-agency:** Defense Federal Acquisition Regulations System
- **Federal Register citation:** 90 FR 5725
- **CFR reference:** 48 CFR 202
- **Publication date:** 2025-01-17
- **Effective date:** 2025-01-17
- **DOD docket:** Docket DARS-2024-0020
## Abstract

DoD is issuing a final rule amending the Defense Federal Acquisition Regulation Supplement (DFARS) to implement sections of the National Defense Authorization Acts for Fiscal Year 2021 that defines the term "material weakness" for Government evaluation of contractor business systems. The term "material weakness" replaces the term "significant deficiency."

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/01/17/2025-00721/defense-federal-acquisition-regulation-supplement-definition-of-material-weakness-dfars-case)
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