CONFORMANCE-LEVEL
Conformance level. The level at which an EDI message implements a standardised subset of the parent standard.
Definition
A conformance level characterises how faithfully an EDIFACT, X12 or UBL message implements a standardised subset: EANCOM, ASC X12 TR3, PEPPOL BIS, EN 16931. It typically distinguishes several levels: minimal (mandatory segments only), recommended (frequent segments), full (all segments of the subset). The effective level is documented in a contractual Conformance Statement between partners.
Origin
The conformance level concept was formalised in EANCOM implementation guides from 1990 to manage the diversity of trading-partner technical capabilities. It was adopted in X12 HIPAA via TR3 Implementation Guides and in PEPPOL via BIS profile statements. Every organisation publicly declares which conformance levels its systems adhere to.
Example in context
A supplier might declare in their ORDERS MIG that they accept EANCOM 2002 S4 conformance level 2: all minimal-level segments (BGM, NAD, LIN, QTY, UNS, UNT) plus the extended ones (DTM, FTX, PCD, MOA). They do not, however, support level-3 optional segments (stacked PIA, GIR, EQD). This statement lets their partners adapt their outbound traffic to the supplier's actual capabilities.