Preclusion in Public Procurement Law 2026

Preclusion in public procurement: loss of the right to challenge procurement breaches when not raised in time – time limits, consequences and exceptions.

Definition: Preclusion in public procurement law refers to the loss of a tenderer's right to invoke a procurement breach in review proceedings if they have not raised that breach against the contracting authority within the statutory time limits.

Last updated: January 2026 · Legal basis: § 160 (3) GWB, BVergG 2018, OLG case law

What is preclusion in public procurement law?

Preclusion is a procedural instrument that protects contracting authorities and the tender procedure from abusively late complaints, while at the same time obliging tenderers to assert their rights in good time. Anyone who identifies a procurement breach must complain about it without undue delay. If they fail to do so or complain too late, they lose the right to invoke that breach in subsequent review proceedings. On that point, the review application will be declared inadmissible.

Statutory complaint deadlines in Germany

§ 160 (3) GWB regulates preclusion conclusively in Germany and provides different deadlines depending on the type of breach:

Identified breaches arising from the procurement documents: Must be raised before expiry of the tender or participation deadline.
Identified breaches arising from the contract notice: Must be raised by expiry of the tender or participation deadline.
Other identified breaches: Must be raised without undue delay upon becoming aware of them.
Information letter (§ 134 GWB): Following receipt of the information letter on the intended award, the deadline for the review application is 15 calendar days.

"Without undue delay"

The criterion of "without undue delay" (i.e. without culpable hesitation) means in practice that a complaint must be raised within one to two weeks at most after the tenderer becomes aware of the breach. Longer waiting periods can lead to preclusion. Case law draws the line at varying points; in case of doubt, tenderers should complain as quickly as possible.

Exceptions to preclusion

Preclusion only applies to identified breaches; unrecognised or unrecognisable breaches may still be raised after the deadline and pursued in review proceedings. In addition, certain breaches – in particular de-facto awards without any prior notice – are not subject to preclusion at all, since the bypassed tenderer cannot have been aware of the procedure.

Preclusion in Austria

In Austria, the BVergG 2018 sets out similar deadlines and complaint duties; the terminology differs, but the underlying structure is comparable. The applicant must raise alleged procurement breaches in good time; late submissions can render the application inadmissible.

FAQ

What does "without undue delay" mean in the context of a complaint? Generally, it means that the complaint must be raised within a few days to a maximum of two weeks after becoming aware of the breach.

Do I lose all rights if I do not complain? Only with regard to the specific, identified breach. Other breaches of which you were unaware can still be invoked.

Must the complaint be made in writing? Written form is strongly recommended in order to prove the complaint and its timing. Oral complaints are virtually impossible to evidence in practice.

What happens if the contracting authority does not remedy the breach? If the contracting authority rejects the complaint, the tenderer may file a review application within 15 days.

Last updated: January 2026 All information provided without guarantee. For legally binding advice, please consult a law firm specialising in public procurement law.