# [ref_impl_eiffel] [816] Correct approach to doing RM validation so that unknown class nodes are not descended into

**Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161)
**Created:** 2009-02-24 00:38 UTC
**Views:** 1
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ref-impl-eiffel-816-correct-approach-to-doing-rm-validation-so-that-unknown-class-nodes-are-not-descended-into/13206

---

## Post #1 by @svn1

Revision: 816
Author:   thomas\.beale

Log Message:

---


**Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-816-correct-approach-to-doing-rm-validation-so-that-unknown-class-nodes-are-not-descended-into/13206
**Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-816-correct-approach-to-doing-rm-validation-so-that-unknown-class-nodes-are-not-descended-into/13206