CEN/TC 440/WG 4 - e-Tendering

This document provides an overview of eTendering standards in the set Business Interoperability Interfaces (BII) for public procurement. BII eTendering covers the tendering part of the e-procurement chain, starting from subscribing interest in a business opportunity till concluding the contract.
BII focus on exchange of information between business partners. This brings in scope all electronic communication between a contracting authority and an economic operator. Back-office information processing, like the evaluation of tenders, is out of scope.
To ensure interoperability each electronic communication will be described as follows:
- A procurement procedure guideline identifies the position of the transactions  in a procedure;
- A choreography describes the sequence of transactions;
- A transaction describes all  information elements exchanged between business partners;
- A syntax implementation guideline (SIG) provides the syntax bindings needed to implement the transaction.