IFC Core : Validation

An IFC file is "valid" only when it conforms to a defined set of normative levels. This skill establishes what IFC validity means, how the buildingSMART Validation Service checks it, how to read a validation result, and how the Gherkin normative rules and their functional-part taxonomy are organized. It is the conformance layer beneath every ifc-errors-* skill and beneath ifc-agents-file-validator.

Applies to IFC2x3, IFC4, and IFC4.3 (the three officially-supported, certifiable versions). IFC5 / IFCx are in development and have no comparable validation pipeline.

Quick Reference

What "valid IFC" means

A file is valid only when it conforms to three normative levels, in order :