\ **Category:** ADL\ **Created:** [24 November 2020 17:24 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118 "2020-11-24T17:24:53Z")\ **Posts on this page:** 6\ **Page:** 1

**Author:** ![Bert\_Verhees](https://discourse.openehr.org/user_avatar/discourse.openehr.org/bert_verhees/32/68_2.png) [@Bert\_Verhees](https://discourse.openehr.org/u/Bert_Verhees)\ **Post date:** [24 November 2020 17:24 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118/1 "2020-11-24T17:24:54Z")

Hi everybody, I am trying to find this ARCHETYPE\_ID\_CONSTRAINT class which is mentioned in AOM2. Does someone know in which specification it is? Thanks very much in advance. Best regards Bert ---

**Author:** ![sebastian.iancu](https://discourse.openehr.org/user_avatar/discourse.openehr.org/sebastian.iancu/32/31_2.png) [@sebastian.iancu](https://discourse.openehr.org/u/sebastian.iancu)\ **Post date:** [24 November 2020 18:52 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118/2 "2020-11-24T18:52:00Z")

> [@Bert\_Verhees](#): > > ARCHETYPE\_ID\_CONSTRAINT Yes, I see it is missing - perhaps @pieterbos knows more here, he is now undergoing some work and re-arrangements of AOM2 specs. ---

**Author:** ![thomas.beale](https://discourse.openehr.org/user_avatar/discourse.openehr.org/thomas.beale/32/35_2.png) [@thomas.beale](https://discourse.openehr.org/u/thomas.beale)\ **Post date:** [24 November 2020 21:24 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118/3 "2020-11-24T21:24:35Z")

This is an error I have created; give me a day or two to find and fix. Maybe tomorrow if I’m lucky! ---

**Author:** ![Bert\_Verhees](https://discourse.openehr.org/user_avatar/discourse.openehr.org/bert_verhees/32/68_2.png) [@Bert\_Verhees](https://discourse.openehr.org/u/Bert_Verhees)\ **Post date:** [25 November 2020 08:46 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118/4 "2020-11-25T08:46:17Z")

😉 Thanks again, Thomas ---

**Author:** ![thomas.beale](https://discourse.openehr.org/user_avatar/discourse.openehr.org/thomas.beale/32/35_2.png) [@thomas.beale](https://discourse.openehr.org/u/thomas.beale)\ **Post date:** [2 December 2020 17:53 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118/5 "2020-12-02T17:53:34Z")

Now fixed (got delayed by the certificate problem) - [see here](https://specifications.openehr.org/releases/AM/latest/AOM2.html#_archetype_id_constraint_class). ---

**Author:** ![Bert\_Verhees](https://discourse.openehr.org/user_avatar/discourse.openehr.org/bert_verhees/32/68_2.png) [@Bert\_Verhees](https://discourse.openehr.org/u/Bert_Verhees)\ **Post date:** [4 December 2020 08:20 UTC](https://discourse.openehr.org/t/archetype-id-constraint/1118/6 "2020-12-04T08:20:44Z")

🚀 Very fast response 🏋️‍♂️