EHR_STATUS inherits from LOCATABLE therefore needs that archetype_node_id to be filled in (as well as few other attributes).
About sharing, here are some files that perhaps help - adl1.4:
EhrStatus.v1.opt (12.3 KB) EhrStatus.v1.object.xml (1.6 KB) EhrStatus.v1.oet (1.7 KB) openEHR-EHR-EHR_STATUS.generic.v1.adl (1.3 KB) openEHR-EHR-ITEM_TREE.ehr_details.v1.adl (2.0 KB)