# \[ref\_impl\_eiffel\] \[1011\] TEST\_DIFFERENTIAL\_ARCHETYPE\_ONTOLOGY was failing during instantiation because , now that we've enabled invariants, the invariants inherited from DIFFERENTIAL\_ARCHETYPE were not being satisfied .

**URL:** <https://discourse.openehr.org/t/ref-impl-eiffel-1011-test-differential-archetype-ontology-was-failing-during-instantiation-because-now-that-weve-enabled-invariants-the-invariants-inherited-from-differential-archetype-were-not-being-satisfied/13493>\
**Category:** Reference Implementation: Eiffel (archive)\
**Created:** [16 July 2010 05:29 UTC](https://discourse.openehr.org/t/ref-impl-eiffel-1011-test-differential-archetype-ontology-was-failing-during-instantiation-because-now-that-weve-enabled-invariants-the-invariants-inherited-from-differential-archetype-were-not-being-satisfied/13493 "2010-07-16T05:29:17Z")\
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**Author:** ![svn1](https://discourse.openehr.org/letter_avatar_proxy/v4/letter/s/958977/32.png) [@svn1](https://discourse.openehr.org/u/svn1)\
**Post date:** [16 July 2010 05:29 UTC](https://discourse.openehr.org/t/ref-impl-eiffel-1011-test-differential-archetype-ontology-was-failing-during-instantiation-because-now-that-weve-enabled-invariants-the-invariants-inherited-from-differential-archetype-were-not-being-satisfied/13493/1 "2010-07-16T05:29:17Z")

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Revision: 1011  
Author: peter.gummer  
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