# 48 CFR § 15.001: 15.001 Definitions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-48-15.001

## Section

- **Citation:** 48 CFR § 15.001
- **Heading:** 15.001 Definitions
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 48—Federal Acquisition Regulations System > CHAPTER 1—FEDERAL ACQUISITION REGULATION > SUBCHAPTER C—CONTRACTING METHODS AND CONTRACT TYPES > PART 15—CONTRACTING BY NEGOTIATION

## Text

As used in this part—
Deficiency is a material failure of a proposal to meet a Government requirement or a combination of significant weaknesses in a proposal that increases the risk of unsuccessful contract performance to an unacceptable level.
Proposal modification is a change made to a proposal before the solicitation closing date and time, or made in response to an amendment, or made to correct a mistake at any time before award.
Proposal revision is a change to a proposal made after the solicitation closing date, at the request of or as allowed by a contracting officer, as the result of negotiations.
Weakness means a flaw in the proposal that increases the risk of unsuccessful contract performance. A “significant weakness” in the proposal is a flaw that appreciably increases the risk of unsuccessful contract performance.
[62 FR 51230, Sept. 30, 1997, as amended at 66 FR 2129, Jan. 10, 2001]

## Nearby sections

- [48 CFR § 13.000 13.000 Scope of part.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.000.md)
- [48 CFR § 13.001 13.001 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.001.md)
- [48 CFR § 13.002 13.002 Purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.002.md)
- [48 CFR § 13.003 13.003 Policy.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.003.md)
- [48 CFR § 13.004 13.004 Legal effect of quotations.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.004.md)
- [48 CFR § 13.005 13.005 List of laws inapplicable to contracts and subcontracts at or below the simplified acquisition threshold.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.005.md)
- [48 CFR § 13.006 13.006 Inapplicable provisions and clauses.](https://www.frixlaw.com/law-library/statutes/ecfr-48-13.006.md)
- [48 CFR § 14.000 14.000 Scope of part.](https://www.frixlaw.com/law-library/statutes/ecfr-48-14.000.md)
- [48 CFR § 15.000 15.000 Scope of part.](https://www.frixlaw.com/law-library/statutes/ecfr-48-15.000.md)
- [48 CFR § 15.001 15.001 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-48-15.001.md)
- [48 CFR § 15.002 15.002 Types of negotiated acquisition.](https://www.frixlaw.com/law-library/statutes/ecfr-48-15.002.md)
- [48 CFR § 16.000 16.000 Scope of part.](https://www.frixlaw.com/law-library/statutes/ecfr-48-16.000.md)
- [48 CFR § 16.001 16.001 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-48-16.001.md)
- [48 CFR § 17.000 17.000 Scope of part.](https://www.frixlaw.com/law-library/statutes/ecfr-48-17.000.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-48-15.001. Check the current official text before relying on it. Not legal advice.