48 CFR · Federal Acquisition Regulation and Defense supplement
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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.
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36 sections with “challenge”
- DFARS 227.7103-13 Government right to review, verify, challenge, and validate asserted restrictions.…ent's rights in the technical data. Under 10 U.S.C. 3782, the Government has the right to challenge asserted restrictions when there are reasonable grounds to question the validity of the assertion and continued adherence to the assertion w…
- DFARS 227.7203-13 Government right to review, verify, challenge, and validate asserted restrictions.…fficient information to permit an evaluation of a particular asserted restriction and may challenge asserted restrictions when there are reasonable grounds to believe that an assertion is not valid. (b) Requests for information. Contractin…
- DFARS 227.7102-3 Government right to review, verify, challenge, and validate asserted restrictions.Follow the procedures at 227.7103-13 and the clause at 252.227-7037, Validation of Asserted Restrictions on Technical Data, regarding the validation of asserted restrictions on technical data related to commercial products or commercial ser…
- FAR 26.103 Procedures.…ion or Indian-owned economic enterprise as to its eligibility, unless an interested party challenges its status or the contracting officer has independent reason to question that status. (b) In the event of a challenge to the representatio…
- DFARS 252.227-7019 Validation of Asserted Restrictions—Computer Software.…rictions in response to a request for information under paragraph (d) of this clause or a challenge under paragraph (f) of this clause. (c) Direct contact with subcontractors or suppliers. The Contractor agrees that the Contracting Officer…
- DFARS 252.227-7037 Validation of Asserted Restrictions on Technical Data.…em was developed exclusively at private expense. The Contracting Officer will not issue a challenge unless there are reasonable grounds to question the validity of the assertion that the commercial item was developed exclusively at private …
- FAR 19.302 Protesting a small business representation or rerepresentation.…cer and the protester of the date it was received, and that the size of the concern being challenged is under consideration by the SBA; and (2) Furnish to the concern whose representation is being protested a copy of the protest and a blan…
- FAR 19.301-1 Representation by the offeror.…id or proposal that it is a small business unless (1) another offeror or interested party challenges the concern's small business representation or (2) the contracting officer has a reason to question the representation. Challenges of and q…
- FAR 19.703 Eligibility requirements for participating in the program.…c status. (b) The contractor, the contracting officer, or any other interested party can challenge a subcontractor's size status representation by filing a protest, in accordance with 13 CFR 121.1001 through 121.1008. (c)(1) In accordance…
- FAR 52.226-1 Utilization of Indian Organizations and Indian-Owned Economic Enterprises.…ion or Indian-owned economic enterprise as to its eligibility, unless an interested party challenges its status or the Contracting Officer has independent reason to question that status. In the event of a challenge to the representation of …
- DFARS 252.226-7001 Utilization of Indian Organizations, Indian-Owned Economic Enterprises, and Native Hawaiian Small Business Concerns.… Native Hawaiian small business concern as to its eligibility, unless an interested party challenges its status or the Contracting Officer has independent reason to question that status. (d) In the event of a challenge to the representatio…
- DFARS 252.270-7002 Pilot Program to Incentivize Contracting with Employee-Owned Businesses.… of years the Contractor has been wholly-owned by its employee stock ownership plan. (2) Challenges, if any, the Contractor experienced in attracting and retaining a talented workforce in a competitive market due to the Contractor's corpor…
- FAR 9.406-2 Causes for debarment.…d. A liability is not finally determined if there is a pending administrative or judicial challenge. In the case of a judicial challenge to the liability, the liability is not finally determined until all judicial appeal rights have been ex…
- FAR 52.209-5 Certification Regarding Responsibility Matters.…d. A liability is not finally determined if there is a pending administrative or judicial challenge. In the case of a judicial challenge to the liability, the liability is not finally determined until all judicial appeal rights have been ex…
- FAR 52.212-3 Offeror Representations and Certifications—Commercial Products and Commercial Services.…d. A liability is not finally determined if there is a pending administrative or judicial challenge. In the case of a judicial challenge to the liability, the liability is not finally determined until all judicial appeal rights have been ex…
- DFARS 227.7103-12 Government right to establish conformity of markings.…rights) is an unjustified marking. (2) Contracting officers have the right to review and challenge the validity of unjustified markings. However, at any time during performance of a contract and notwithstanding existence of a challenge, th…
- DFARS 227.7203-12 Government right to establish conformity of markings.…rights) is an unjustified marking. (2) Contracting officers have the right to review and challenge the validity of unjustified markings. However, at any time during performance of a contract and notwithstanding existence of a challenge, th…
- FAR 6.502 Duties and responsibilities.…and open competition in the contracting operations of the agency; (iii) Actions taken to challenge requirements that are not stated in terms of functions to be performed, performance required or essential physical characteristics; (iv) An…
- FAR 9.202 Policy.…re not mandatory on the contracting officer when the basis for a referral would involve a challenge by the offeror to either the validity of the qualification requirement or the offeror's compliance with such requirement. (e) The contracti…
- FAR 15.503 Notifications to unsuccessful offerors.…of the offeror's proposal; and (C) That no response is required unless a basis exists to challenge the size status or small business status of the apparently successful offeror (e.g., small business concern, small disadvantaged business co…
- FAR 19.804-3 SBA acceptance.…ode designation assigned to the requirement by the contracting officer. (1) SBA will not challenge the NAICS code assigned to the requirement by the contracting officer if it is reasonable, even though other NAICS codes may also be reasona…
- FAR 19.813 Protesting an 8(a) participant's eligibility or size status.…ility of an 8(a) participant for a sole source or competitive 8(a) requirement may not be challenged by another 8(a) participant or any other party, either to SBA or any administrative forum as part of a bid or other contract protest (see 1…
- FAR 22.1002-3 Wage determinations based on collective bargaining agreements.… and 22.1021, explaining when the application of a collective bargaining agreement can be challenged due to a variance with prevailing rates or lack of arm's length bargaining.
- FAR 31.201-3 Determining reasonableness.…o the incurrence of costs by a contractor. If an initial review of the facts results in a challenge of a specific cost by the contracting officer or the contracting officer's representative, the burden of proof shall be upon the contractor …
- FAR 31.201-6 Accounting for unallowable costs.…5) In the absence of an advance agreement, if an initial review of the facts results in a challenge of the statistical sampling methods by the contracting officer or the contracting officer's representative, the burden of proof shall be on …
- DFARS 219.705-4 Reviewing the subcontracting plan.(d)(i) Challenge any subcontracting plan that does not contain positive goals. A small disadvantaged business goal of less than five percent must be approved one level above the contracting officer. (ii) The contracting officer may use the…
- DFARS 227.7103-6 Contract clauses.…chnical Data (paragraph (e) of the clause contains information that must be included in a challenge).
- DFARS 227.7103-10 Contractor identification and marking of technical data to be furnished with restrictive markings.… the parties. As provided at 227.7103-13, the Government has the right to review, verify, challenge and validate restrictive markings. (5) Information provided by offerors in response to the solicitation provision may be used in the source…
- DFARS 227.7103-15 Subcontractor rights in technical data.…52.227-7037 obtains a contractor's agreement that the direct transaction of validation or challenge matters with subcontractors at any tier does not establish or imply privity of contract. When a subcontractor or supplier exercise its right…
- DFARS 227.7104-4 Solicitation provisions and contract clauses.…chnical Data (paragraph (e) of the clause contains information that must be included in a challenge). (c)(1) Use the provision at 252.227-7040, Additional Preaward Requirements for Small Business Technology Transfer Program, in solicitatio…
- DFARS 227.7203-6 Solicitation provisions and contract clauses.…-3786. Paragraph (e) of the clause contains information that must be included in a formal challenge.
- DFARS 227.7203-10 Contractor identification and marking of computer software or computer software documentation to be furnished with restrictive markings.… the parties. As provided at 227.7203-13, the Government has the right to review, verify, challenge and validate restrictive markings. (5) Information provided by offerors in response to the solicitation provision at 252.227-7017 may be us…
- DFARS 227.7203-15 Subcontractor rights in computer software or computer software documentation.… Data, obtain a contractor's agreement that the Government's transaction of validation or challenge matters directly with subcontractors at any tier does not establish or imply privity of contract. When a subcontractor or supplier exercises…
- DFARS 234.004 Acquisition strategy.…ould permit the use of a fixed-price type contract; and (2) The complexity and technical challenge of the program is not the result of a failure to meet the requirements of 10 U.S.C. 4251. (ii) In accordance with section 811 of the Nation…
- DFARS 252.204-7024 Notice on the Use of the Supplier Performance Risk System.…ures and risk assessment methodology are detailed in the SPRS user's guide. The method to challenge a rating generated by SPRS is also provided in the user's guide. SPRS evaluation criteria are available at https://www.sprs.csd.disa.mil/pdf…
- DFARS 252.237-7024 Notice of Continuation of Essential Contractor Services.…s or until normal operations can be resumed; (2) Address in the plan, at a minimum— (i) Challenges associated with maintaining essential contractor services during an extended event, such as a pandemic that occurs in repeated waves; (ii)…
FAR (chapter 1)
- Part 1 Federal Acquisition Regulations System 58 sections
- Part 2 Definitions of Words and Terms 3 sections
- Part 3 Improper Business Practices and Personal Conflicts of Interest 98 sections
- Part 4 Administrative and Information Matters 116 sections
- Part 5 Publicizing Contract Actions 34 sections
- Part 6 Competition Requirements 34 sections
- Part 7 Acquisition Planning 34 sections
- Part 8 Required Sources of Supplies and Services 67 sections
- Part 9 Contractor Qualifications 106 sections
- Part 10 Market Research 4 sections
- Part 11 Describing Agency Needs 33 sections
- Part 12 Acquisition of Commercial Products and Commercial Services 38 sections
- Part 13 Simplified Acquisition Procedures 49 sections
- Part 14 Sealed Bidding 82 sections
- Part 15 Contracting by Negotiation 81 sections
- Part 16 Types of Contracts 74 sections
- Part 17 Special Contracting Methods 50 sections
- Part 18 Emergency Acquisitions 34 sections
- Part 19 Small Business Programs 126 sections
- Part 22 Application of Labor Laws to Government Acquisitions 205 sections
- Part 23 Environment, Sustainable Acquisition, and Material Safety 38 sections
- Part 24 Protection of Privacy and Freedom of Information 10 sections
- Part 25 Foreign Acquisition 81 sections
- Part 26 Other Socioeconomic Programs 36 sections
- Part 27 Patents, Data, and Copyrights 59 sections
- Part 28 Bonds and Insurance 61 sections
- Part 29 Taxes 23 sections
- Part 30 Cost Accounting Standards Administration 30 sections
- Part 31 Contract Cost Principles and Procedures 87 sections
- Part 32 Contract Financing 175 sections
- Part 33 Protests, Disputes, and Appeals 23 sections
- Part 34 Major System Acquisition 20 sections
- Part 35 Research and Development Contracting 25 sections
- Part 36 Construction and Architect-engineer Contracts 81 sections
- Part 37 Service Contracting 46 sections
- Part 38 Federal Supply Schedule Contracting 3 sections
- Part 39 Acquisition of Information Technology 14 sections
- Part 40 Information Security and Supply Chain Security 12 sections
- Part 41 Acquisition of Utility Services 17 sections
- Part 42 Contract Administration and Audit Services 84 sections
- Part 43 Contract Modifications 14 sections
- Part 44 Subcontracting Policies and Procedures 24 sections
- Part 45 Government Property 33 sections
- Part 46 Quality Assurance 60 sections
- Part 47 Transportation 106 sections
- Part 48 Value Engineering 13 sections
- Part 49 Termination of Contracts 108 sections
- Part 50 Extraordinary Contractual Actions and the Safety Act 34 sections
- Part 51 Use of Government Sources by Contractors 15 sections
- Part 52 Solicitation Provisions and Contract Clauses 680 sections
- Part 53 Forms 61 sections
DFARS (chapter 2, Defense)
- Part 201 Federal Acquisition Regulations System 24 sections
- Part 202 Definitions of Words and Terms 1 sections
- Part 203 Improper Business Practices and Personal Conflicts of Interest 28 sections
- Part 204 Administrative and Information Matters 76 sections
- Part 205 Publicizing Contract Actions 11 sections
- Part 206 Competition Requirements 20 sections
- Part 207 Acquisition Planning 22 sections
- Part 208 Required Sources of Supplies and Services 31 sections
- Part 209 Contractor Qualifications 55 sections
- Part 210 Market Research 2 sections
- Part 211 Describing Agency Needs 22 sections
- Part 212 Acquisition of Commercial Products and Commercial Services 24 sections
- Part 213 Simplified Acquisition Procedures 23 sections
- Part 214 Sealed Bidding 14 sections
- Part 215 Contracting by Negotiation 66 sections
- Part 216 Types of Contracts 36 sections
- Part 217 Special Contracting Methods 64 sections
- Part 218 Emergency Acquisitions 7 sections
- Part 219 Small Business Programs 47 sections
- Part 222 Application of Labor Laws to Government Acquisitions 56 sections
- Part 223 Environment, Sustainable Acquisition, and Material Safety 34 sections
- Part 224 Protection of Privacy and Freedom of Information 2 sections
- Part 225 Foreign Acquisition 251 sections
- Part 226 Other Socioeconomic Programs 14 sections
- Part 227 Patents, Data, and Copyrights 99 sections
- Part 228 Bonds and Insurance 17 sections
- Part 229 Taxes 9 sections
- Part 230 Cost Accounting Standards Administration 2 sections
- Part 231 Contract Cost Principles and Procedures 13 sections
- Part 232 Contract Financing 74 sections
- Part 233 Protests, Disputes, and Appeals 8 sections
- Part 234 Major System Acquisition 13 sections
- Part 235 Research and Development Contracting 16 sections
- Part 236 Construction and Architect-engineer Contracts 25 sections
- Part 237 Service Contracting 67 sections
- Part 239 Acquisition of Information Technology 38 sections
- Part 241 Acquisition of Utility Services 8 sections
- Part 242 Contract Administration and Audit Services 40 sections
- Part 243 Contract Modifications 18 sections
- Part 244 Subcontracting Policies and Procedures 13 sections
- Part 245 Government Property 23 sections
- Part 246 Quality Assurance 39 sections
- Part 247 Transportation 27 sections
- Part 249 Termination of Contracts 14 sections
- Part 250 Extraordinary Contractual Actions and the Safety Act 16 sections
- Part 251 Use of Government Sources by Contractors 5 sections
- Part 252 Solicitation Provisions and Contract Clauses 405 sections
- Part 253 Forms 10 sections
- Part 270 Defense Contracting Programs 7 sections
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.