# Why does renaming the Archetype in a slot cause changing its cardinality?

**Category:** [Template Designer](https://discourse.openehr.org/c/template-designer/93)
**Created:** 2024-09-12 06:43 UTC
**Views:** 53
**Replies:** 2
**URL:** https://discourse.openehr.org/t/why-does-renaming-the-archetype-in-a-slot-cause-changing-its-cardinality/5702

---

## Post #1 by @linforest

In Ocean Template Designer, why does renaming the Archetype in a slot cause  automatically changing its cardinality from 0..* to 0... 1?

For example, in the [openEHR-EHR-SECTION.immunisation_list.v0](https://ckm.openehr.org/ckm/archetypes/1013.1.3727), [openEHR-EHR-ACTION.medication.v1](https://ckm.openehr.org/ckm/archetypes/1013.1.123) was dragged into the SLOT "Vaccinations administered".  When renaming the imported Archetype from "药物管理"(zh-CN; en: Medication management) to "预防接种条目" or any other names, its cardinality would be automatically changed from 0..* to 0... 1.  But I need its cardinality keep unchanged.

---

## Post #2 by @ian.mcnicoll

Template Designer is following some older RM/AOM rules which insisted that a renamed slot had to be restricted in this way.

Since then the rule has been relaxed, so that the 'no duplicate names' rules is applied at run-time, not at design-time but TD has not been updated for some time AFAIK.

It was for us, one of the big benefits of moving to ArchetypeDesigner.

---

## Post #3 by @linforest

If still sticking with the Ocean Template Designer,  is there any workaround for this?
Using a text editor, the cardinality could be manually restored to default (0..*).  But once it's opened and saved again in the Ocean Template Designer,  my effort will be in vain.

---


**Canonical:** https://discourse.openehr.org/t/why-does-renaming-the-archetype-in-a-slot-cause-changing-its-cardinality/5702
**Original content:** https://discourse.openehr.org/t/why-does-renaming-the-archetype-in-a-slot-cause-changing-its-cardinality/5702