CONITT — EDIFACT Invitation to Tender Message (D.01B)

The CONITT message conveys the invitation to tender sent by a buyer — public or private — to potential suppliers: subject of the consultation, lots, selection criteria, schedule, general terms and contractual clauses. It sets the stage for the subsequent CONTEN (response) and CONDPV (award). This page summarises the segment structure as published by UN/CEFACT for directory D.01B.

Purpose

The CONITT message conveys the invitation to tender sent by a buyer — public or private — to potential suppliers: subject of the consultation, lots, selection criteria, schedule, general terms and contractual clauses. It sets the stage for the subsequent CONTEN (response) and CONDPV (award).

This page focuses on the structure published by UN/CEFACT for directory D.01B. The segments listed, their status (M / C), position and repetition factor are extracted from the official file conitt_c.htm hosted on service.unece.org.

Segment structure

The CONITT D.01B message has 84 header entries, 45 detail entries and 2 summary entries (segments and groups combined). Groups are shown in bold and their members are indented by actual nesting depth.

Header

Detail

Summary

Changes vs D.96A

Top-level differences between D.96A and D.01B for the CONITT message (segments directly inside header / detail / summary, ignoring nested groups). The comparison is indicative: a given tag may have evolved inside nested groups without showing up in this synthesis.

Segments removed vs D.96A

• GIS in the header section — present in D.96A but missing in D.01B at the same level.
• GIS in the detail section — present in D.96A but missing in D.01B at the same level.

Structural example

Minimal example of an CONITT D.01B message with mandatory segments only. The goal is to show the exact version declared in UNH (CONITT:D:01B:UN) — not to replicate a full business case (see the CONITT D.96A page for an annotated example).

UNB+UNOC:3+5410000000123:14+5410000000456:14+260514:1430+CTRL001001'
UNH+1+CONITT:D:01B:UN'
BGM+710+CONITT-2026-0017+9'
RFF+AGA:TENDER-2026-0017'
DTM+137:20260514:102'
DTM+38:20260615:102'
NAD+BY+5410000000123::9'
NAD+SE+5410000000456::9'
LIN+1++3520000001234:EN'
IMD+F++:::Server rack 42U, redundant PSU, 19 inch'
QTY+21:48'
UNT+11+1'
UNZ+1+CTRL001001'

Common errors

• Misaligned UNH tokens — The UNH+...+CONITT:D:01B:UN token must reflect exactly the directory in use — a mismatch between the UNH release and the release agreed with the partner is rejected by every strict validator.
• Wrong UNT segment count — The value after UNT+ must include UNH and UNT themselves. By far the most common sender-side error, regardless of the directory in use.
• Stale code lists — Between D.96A and D.01B, several code lists received new qualifiers (DTM status, RFF qualifier, NAD codes…). Reusing an older directory’s code tables triggers warnings or even rejections depending on the partner’s strict-conformance mode.

Related messages

Other versions of this message available on ediverse.io: CONITT D.96A, CONITT D.10A, CONITT D.16B, CONITT D.21B, CONITT D.24A, CONITT D.97A, CONITT D.99B, CONITT D.00B, CONITT D.02B, CONITT D.05A, CONITT D.08A, CONITT D.13B, CONITT D.18B, CONITT D.20B.

X12 functional equivalent: X12 840.

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