# [ref_impl_eiffel] [997] Fix a precondition failure caused by ARCHETYPE_DIRECTORY. initialise_ontology_prototype violating the same_rule precondition of ARRAYED_SET .merge, i.e.

**Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161)
**Created:** 2010-07-08 16:01 UTC
**Views:** 4
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ref-impl-eiffel-997-fix-a-precondition-failure-caused-by-archetype-directory-initialise-ontology-prototype-violating-the-same-rule-precondition-of-arrayed-set-merge-i-e/13473

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## Post #1 by @svn1

Revision: 997
Author:   peter\.gummer
Log Message:

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**Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-997-fix-a-precondition-failure-caused-by-archetype-directory-initialise-ontology-prototype-violating-the-same-rule-precondition-of-arrayed-set-merge-i-e/13473
**Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-997-fix-a-precondition-failure-caused-by-archetype-directory-initialise-ontology-prototype-violating-the-same-rule-precondition-of-arrayed-set-merge-i-e/13473