# Problems with archetype internal ref

**URL:** https://discourse.openehr.org/t/problems-with-archetype-internal-ref/16222
**Category:** Technical (archive)
**Created:** [6 December 2009 19:16 UTC](https://discourse.openehr.org/t/problems-with-archetype-internal-ref/16222 "2009-12-06T19:16:33Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![pablo](https://discourse.openehr.org/user_avatar/discourse.openehr.org/pablo/32/3505_2.png) [@pablo](https://discourse.openehr.org/u/pablo)
#### Post date: [6 December 2009 19:16 UTC](https://discourse.openehr.org/t/problems-with-archetype-internal-ref/16222/1 "2009-12-06T19:16:33Z")

</div>

Hi,

I’m trying to support Archetype Internal Refs on my degree thesis project but I think there is an error on the specs or on the oceans archetype Editor.

In the AOM specs, every CObject has a mandatory node\_id attribute, included the ArchetypeInternalRef.  
I make an archetype using Oceans Archetype Editor and the node with the reference looks like this:

CLUSTER[at0008] occurrences matches {0..1} matches { – Pelvis  
items cardinality matches {0..\*; unordered} matches {  
use\_node ELEMENT occurrences matches {0..3} /data[at0001]/events[at0002]/data[at0003]/items[at0004]/items[at0012]  
}  
}

But the use\_node internal reference has no node\_id.

Anyone one knows where is the problem?  
Where can I set the intenal ref node\_id?

Thanks a lot,  
Pablo Pazos Gutierrez