# Defense Federal Acquisition Regulation Supplement; Taxpayer Identification Numbers (DFARS Case 2006-D037)
> **Defense Federal Acquisition Regulations System** · Final rule. · Published 2007-09-06 · 72 FR 51194
## Document
- **Document number:** E7-17433
- **Category:** dfars-acquisition
- **Sub-agency:** Defense Federal Acquisition Regulations System
- **Federal Register citation:** 72 FR 51194
- **CFR reference:** 48 CFR 252
- **Publication date:** 2007-09-06
## Abstract

DoD has issued a final rule amending the Defense Federal Acquisition Regulation Supplement (DFARS) to address requirements for validation of Taxpayer Identification Numbers as part of the Central Contractor Registration process. The DFARS changes are consistent with changes made to the Federal Acquisition Regulation.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/09/06/E7-17433/defense-federal-acquisition-regulation-supplement-taxpayer-identification-numbers-dfars-case)
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