What is XVergabe?
XVergabe is an open data standard (also: interface standard) for electronic procurement (e-procurement) in Germany. It defines uniform interfaces and data formats so that different procurement platforms and bidder software can communicate with each other.
Background
The German procurement landscape features numerous different platforms — from DTVP to Vergabe24 to state portals. Without a unified standard, bidders would need separate software or logins for each platform.
The XVergabe project was initiated by the Federal Procurement Office (Beschaffungsamt des BMI) and supported by KoSIT (Coordination Office for IT Standards). The goal was to create a cross-platform standard making the e-procurement mandate practical.
Technical Architecture
XVergabe is based on a client-server model:
| Component | Function |
|---|---|
| XVergabe Client | Bidder's software (bidder tool) |
| XVergabe Server | Procurement platform interface |
| XVergabe Protocol | Standardized communication between client and server |
Core Functions
- Search and retrieval: Cross-platform search and download of tender documents
- Bidder communication: Asking questions and receiving answers
- Bid submission: Standardized electronic bid transmission
- Encryption: End-to-end encryption of bids (four-eyes principle for decryption)
- Signature: Qualified electronic signature per eIDAS Regulation
Legal Basis
The obligation for electronic procurement derives from:
- § 97(5) GWB: Principle of electronic communication
- § 9 VgV: Electronic communication above EU thresholds
- § 11a VOB/A EU: Electronic means for EU construction procurements
- EU Implementing Regulation 2019/1780: eForms standard for notices
Benefits for Bidders
- One tool for all platforms: Instead of multiple platform logins, one XVergabe-compatible client suffices
- Standardized processes: Uniform procedures for bid submission, communication, download
- Legally secure submission: Encryption and signature per legal requirements
- Time savings: No need to learn platform-specific interfaces
Supported Platforms
Numerous German procurement platforms support XVergabe, including DTVP, Vergabe24, subreport ELViS, and various state platforms.
Distinction from PEPPOL
While XVergabe standardizes the procurement process (tender to award), PEPPOL handles post-award execution (order to invoice). Both standards complement each other.
Current Developments
- eForms integration: Since October 2023, eForms are the EU standard for notices — XVergabe is being adapted accordingly
- Expansion: Increasingly mandatory use by contracting authorities
- AI integration: Potential for automated tender search and bid submission
Practical Tip
Patterno goes beyond XVergabe by automatically searching all relevant procurement platforms — regardless of the standard used — and delivering matching tenders directly to your dashboard.