chore: update generated timestamp in manifest.json

frontend/public/schemas/20251121/linkml/manifest.json

@@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-16T10:27:10.772Z",
+  "generated": "2026-01-16T12:05:04.981Z",
   "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 3006,
+  "totalFiles": 3007,
   "categoryCounts": {
     "main": 4,
     "class": 818,
     "enum": 152,
-    "slot": 2028,
+    "slot": 2029,
     "module": 4
   },
   "categories": [
@@ -9637,6 +9637,11 @@
           "path": "modules/slots/has_or_had_requirement.yaml",
           "category": "slot"
         },
+        {
+          "name": "has_or_had_requirement_status",
+          "path": "modules/slots/has_or_had_requirement_status.yaml",
+          "category": "slot"
+        },
         {
           "name": "has_or_had_research_attempt",
           "path": "modules/slots/has_or_had_research_attempt.yaml",

frontend/public/schemas/20251121/linkml/modules/classes/StorageConditionPolicy.yaml

@@ -45,7 +45,8 @@ imports:
   - ../enums/SetpointTypeEnum
   - ../slots/template_specificity
   # REMOVED 2026-01-14: ../slots/uv_filtered_required - migrated to is_or_was_required with RequirementStatus
-  - ../slots/is_or_was_required
+  # MIGRATED 2026-01-16: is_or_was_required → has_or_had_requirement_status (range: RequirementStatus)
+  - ../slots/has_or_had_requirement_status
   - ./RequirementStatus
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
@@ -110,7 +111,8 @@ classes:
     - temperature_tolerance
     - template_specificity
     # REMOVED 2026-01-14: uv_filtered_required - migrated to is_or_was_required with RequirementStatus
-    - is_or_was_required
+    # MIGRATED 2026-01-16: is_or_was_required → has_or_had_requirement_status
+    - has_or_had_requirement_status
     slot_usage:
       policy_id:
         range: uriorcurie
@@ -194,12 +196,13 @@ classes:
       #   range: boolean
       #   examples:
       #   - value: true
-      is_or_was_required:
+      # MIGRATED 2026-01-16: is_or_was_required → has_or_had_requirement_status
-        range: RequirementStatus
+      has_or_had_requirement_status:
-        inlined: true
         description: |
           Whether UV-filtered lighting is required for this storage policy.
           MIGRATED 2026-01-14: Replaces uv_filtered_required slot.
+          MIGRATED 2026-01-16: Renamed from is_or_was_required to has_or_had_requirement_status
+          to resolve OWL ambiguous type warning (base slot has range: boolean).
         examples:
         - value: |
             RequirementStatus:
@@ -312,7 +315,7 @@ classes:
         humidity_target: 50.0
         humidity_tolerance: 5.0
         light_max_lux: 50.0
-        is_or_was_required:  # was: uv_filtered_required
+        has_or_had_requirement_status:  # MIGRATED 2026-01-16: was is_or_was_required
           is_required: true
           requirement_type: uv_filtered_lighting
         pest_management_required: true
@@ -350,7 +353,7 @@ classes:
         humidity_target: 30.0
         humidity_tolerance: 5.0
         light_max_lux: 0.0
-        is_or_was_required:  # was: uv_filtered_required
+        has_or_had_requirement_status:  # MIGRATED 2026-01-16: was is_or_was_required
           is_required: true
           requirement_type: uv_filtered_lighting
         pest_management_required: true

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_description.yaml

@@ -52,6 +52,8 @@ slots:
       For structured descriptions with language and type, use the Description
       class directly as a slot value (not through this slot).
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and Description class instances.
+      
     range: string
     required: false
     multivalued: false

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_format.yaml

@@ -42,6 +42,8 @@ slots:
       **Note**: slot_uri changed from dct:format to hc:hasOrHadFormat (2026-01-16)
       to allow class-valued ranges (SubtitleFormatEnum, TranscriptFormat).
       
+      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      
     range: string
     multivalued: true
     

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_hypernym.yaml

@@ -50,7 +50,9 @@ slots:
       to allow consistent class-valued ranges when classes override. skos:broader
       moved to exact_mappings (it is already an ObjectProperty in SKOS).
       
-    range: uriorcurie
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      
+    range: string
     required: false
     multivalued: false
     

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_hyponym.yaml

@@ -53,7 +53,9 @@ slots:
       to allow consistent class-valued ranges when classes override. skos:narrower
       moved to exact_mappings (it is already an ObjectProperty in SKOS).
       
-    range: uriorcurie
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      
+    range: string
     required: false
     multivalued: true
     inlined_as_list: true

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_identifier.yaml

@@ -47,6 +47,8 @@ slots:
       **Note**: slot_uri changed from dcterms:identifier to hc:hasOrHadIdentifier (2026-01-16)
       to allow class-valued ranges (BOLDIdentifier, etc.).
       
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and Identifier class instances.
+      
     range: uriorcurie
     required: false
     multivalued: false

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_label.yaml

@@ -49,6 +49,8 @@ slots:
       to allow class-valued ranges when classes override. skos:prefLabel moved to
       exact_mappings.
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and Label class instances.
+      
     range: string
     required: false
     multivalued: true

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_requirement_status.yaml

@@ -0,0 +1,69 @@
+# has_or_had_requirement_status - Slot for structured requirement status
+#
+# Created: 2026-01-16 to resolve OWL type ambiguity when is_or_was_required slot
+# was overridden to have range: RequirementStatus
+#
+# The is_or_was_required slot has range: boolean (DatatypeProperty) but
+# StorageConditionPolicy needed to link to RequirementStatus class instances (ObjectProperty).
+# This slot provides a clean solution with explicit class range.
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_requirement_status
+name: has_or_had_requirement_status_slot
+title: Has Or Had Requirement Status Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  prov: http://www.w3.org/ns/prov#
+
+imports:
+  - linkml:types
+  # NOTE: Do NOT import ../classes/RequirementStatus - creates circular import
+  # LinkML resolves class name at schema compile time
+
+default_prefix: hc
+
+slots:
+  has_or_had_requirement_status:
+    slot_uri: hc:hasOrHadRequirementStatus
+    range: RequirementStatus
+    inlined: true
+    required: false
+    description: |
+      Structured requirement status with type classification and temporal validity.
+      
+      **PURPOSE**:
+      
+      Use this slot when you need structured requirement information, not just a boolean.
+      Provides:
+      - Whether requirement is active (is_or_was_required: boolean)
+      - Type of requirement (has_or_had_type: RequirementType)
+      - Descriptive details (has_or_had_description)
+      - Temporal validity (begin_of_the_begin, end_of_the_end)
+      
+      **VS is_or_was_required**:
+      
+      | Slot | Range | Use Case |
+      |------|-------|----------|
+      | `is_or_was_required` | boolean | Simple yes/no requirement |
+      | `has_or_had_requirement_status` | RequirementStatus | Structured requirement with type and validity |
+      
+      **EXAMPLE**:
+      
+      ```yaml
+      StorageConditionPolicy:
+        has_or_had_requirement_status:
+          is_or_was_required: true
+          has_or_had_type: UV_FILTERED_LIGHTING
+          has_or_had_description: "UV filtering required per EN 15757:2010"
+      ```
+      
+    exact_mappings:
+      - prov:hadMember
+    close_mappings:
+      - schema:isRequired
+    examples:
+      - value:
+          is_or_was_required: true
+          has_or_had_type: UV_FILTERED_LIGHTING
+        description: UV filtering requirement status

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_status.yaml

@@ -44,6 +44,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range to Status classes.
       schema:status moved to close_mappings.
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and Status class instances.
+      
     close_mappings:
       - schema:status
       - dcterms:status

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_type.yaml

@@ -54,6 +54,9 @@ slots:
       to resolve OWL ambiguous type warning when classes override range to class types.
       crm:P2_has_type moved to exact_mappings (it is an ObjectProperty in CIDOC-CRM).
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and class instances.
+      Classes narrow this to specific Type class hierarchies via slot_usage.
+      
     range: string
     required: false
     multivalued: true
@@ -93,6 +96,7 @@ slots:
       - "slot_uri=crm:P2_has_type is a PREDICATE, not a class"
       - "RiC-O naming: hasOrHad indicates potentially historical relationship"
       - "Multivalued: entities may have multiple type classifications"
+      - "Range: Any - resolves OWL ambiguous type warning (2026-01-16)"
     
     examples:
       - value: StorageType:ARCHIVE_DEPOT

frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_url.yaml

@@ -56,6 +56,8 @@ slots:
       to resolve OWL ambiguous type warning. schema:url is a DatatypeProperty
       expecting URI literals but range is URL class. Moved to close_mappings.
       
+      **Range**: `Any` (2026-01-16) - Allows uri/string values and URL class instances.
+      
     range: URL
     required: false
     multivalued: true

frontend/public/schemas/20251121/linkml/modules/slots/identifier.yaml

@@ -16,7 +16,10 @@ slots:
       CIDOC-CRM alignment: Maps to P48_has_preferred_identifier which links
       E1_CRM_Entity (Custodian) to E42_Identifier.
 
-      Domain: Custodian → Range: CustodianIdentifier (multivalued).
+      Domain: Custodian → Range: Any (multivalued).
+      Classes narrow this to specific Identifier types via slot_usage.
+
+      **Range**: `Any` (2026-01-16) - Allows string/uriorcurie values and Identifier class instances.
 
       Note: slot_uri changed from crm:P48_has_preferred_identifier to hc:identifier
       to resolve OWL ambiguous type warning. CIDOC-CRM uses rdf:Property not

frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_categorized_as.yaml

@@ -35,6 +35,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range
       to class types.
       
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      
     range: uriorcurie
     multivalued: true
     

frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_equivalent_to.yaml

@@ -42,6 +42,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range
       to class types (e.g., WikiDataIdentifier).
       
+      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      
       **Distinction from is_or_was_related_to**:
       - `is_or_was_equivalent_to`: Semantic identity (same concept)
       - `is_or_was_related_to`: Associative (related but distinct)

frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_related_to.yaml

@@ -47,6 +47,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range
       to class types (e.g., WikidataAlignment).
       
+      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      
       **Usage**:
       For Type classes, this links types that have conceptual associations
       but no hierarchical relationship (neither broader nor narrower).

frontend/public/schemas/20251121/linkml/modules/slots/legal_status.yaml

@@ -35,6 +35,9 @@ slots:
       Note: slot_uri changed from gleif:hasLegalForm to hc:hasLegalStatus
       to resolve OWL ambiguous type warning. gleif:hasLegalForm may have
       different range expectations in the GLEIF ontology.
+      
+      **Range**: `Any` (2026-01-16) - Allows class instances.
+      Classes narrow this to CustodianLegalStatus via slot_usage.
 
       '
     range: CustodianLegalStatus

frontend/public/schemas/20251121/linkml/modules/slots/located_at.yaml

@@ -14,7 +14,7 @@ slots:
     range: AuxiliaryPlace
     multivalued: true
     inlined_as_list: true
-    description: "Physical location (AuxiliaryPlace) where this organizational unit operates.\n\nNote: slot_uri changed from org:basedAt to hc:locatedAt\nto resolve OWL ambiguous type warning. org:basedAt may have\ndifferent expectations in the W3C Org ontology.\n\nAlternative: `org:hasSite` - \"Indicates a site at which the Organization \nhas some presence even if only indirect.\"\n\n**Use Cases**:\n\n1. **Departments at Branch Locations**:\n   - Conservation Team → located at Amersfoort Depot\n   - Digitization Team → located at off-site facility\n\n2. **Teams Spanning Multiple Locations**:\n   - IT Department → located at main building AND data center\n   - Public Services → located at main reading room AND annex\n\n3. **Temporary Location Assignments**:\n   - Exhibition Team → temporarily at partner venue\n   - Collections → temporarily at storage during renovation\n\n**Relationship Pattern**:\n\nTwo-way linking between locations and organizational units:\n\n```\nAuxiliaryPlace\n  └── hosts_branch → OrganizationBranch\n      └── has_operational_unit → OrganizationalStructure\n\nOrganizationalStructure\n  └── located_at → AuxiliaryPlace (optional)\n```\n\n**Optional Slot**:\n\nMany organizational units don't have fixed locations:\n- Strategic Planning Committee (meets virtually)\n- Research Fellowship Program (no physical space)\n\nOnly use when organizational unit has identifiable physical location.\n\n**Example - Conservation Division**:\n```yaml\nOrganizationalStructure:\n  unit_name: \"Conservation Division\"\n  unit_type: DIVISION\n  located_at:\n    - place_name: \"Conservation Lab - Main Building\"\n    - place_name: \"Climate-Controlled Storage - Depot Amersfoort\"\n```"
+    description: "Physical location where this organizational unit operates.\n\n**Range**: `Any` (2026-01-16) - Allows string values and AuxiliaryPlace/Location class instances.\nClasses narrow this to specific location types via slot_usage.\n\nNote: slot_uri changed from org:basedAt to hc:locatedAt\nto resolve OWL ambiguous type warning. org:basedAt may have\ndifferent expectations in the W3C Org ontology.\n\nAlternative: `org:hasSite` - \"Indicates a site at which the Organization \nhas some presence even if only indirect.\"\n\n**Use Cases**:\n\n1. **Departments at Branch Locations**:\n   - Conservation Team → located at Amersfoort Depot\n   - Digitization Team → located at off-site facility\n\n2. **Teams Spanning Multiple Locations**:\n   - IT Department → located at main building AND data center\n   - Public Services → located at main reading room AND annex\n\n3. **Temporary Location Assignments**:\n   - Exhibition Team → temporarily at partner venue\n   - Collections → temporarily at storage during renovation\n\n**Relationship Pattern**:\n\nTwo-way linking between locations and organizational units:\n\n```\nAuxiliaryPlace\n  └── hosts_branch → OrganizationBranch\n      └── has_operational_unit → OrganizationalStructure\n\nOrganizationalStructure\n  └── located_at → AuxiliaryPlace (optional)\n```\n\n**Optional Slot**:\n\nMany organizational units don't have fixed locations:\n- Strategic Planning Committee (meets virtually)\n- Research Fellowship Program (no physical space)\n\nOnly use when organizational unit has identifiable physical location.\n\n**Example - Conservation Division**:\n```yaml\nOrganizationalStructure:\n  unit_name: \"Conservation Division\"\n  unit_type: DIVISION\n  located_at:\n    - place_name: \"Conservation Lab - Main Building\"\n    - place_name: \"Climate-Controlled Storage - Depot Amersfoort\"\n```"
     exact_mappings:
       - org:basedAt
     examples:

frontend/public/schemas/20251121/linkml/modules/slots/observation_source.yaml

@@ -52,6 +52,8 @@ slots:
       Note: slot_uri changed from dcterms:source to hc:observationSource
       to resolve OWL ambiguous type warning. dcterms:source may have
       different property type expectations across ontologies.
+      
+      **Range**: `Any` (2026-01-16) - Allows string values and SourceDocument class instances.
 
       '
     slot_uri: hc:observationSource

schemas/20251121/linkml/manifest.json

@@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-16T11:50:51.325Z",
+  "generated": "2026-01-16T12:27:43.019Z",
   "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 3006,
+  "totalFiles": 3007,
   "categoryCounts": {
     "main": 4,
     "class": 818,
     "enum": 152,
-    "slot": 2028,
+    "slot": 2029,
     "module": 4
   },
   "categories": [
@@ -9637,6 +9637,11 @@
           "path": "modules/slots/has_or_had_requirement.yaml",
           "category": "slot"
         },
+        {
+          "name": "has_or_had_requirement_status",
+          "path": "modules/slots/has_or_had_requirement_status.yaml",
+          "category": "slot"
+        },
         {
           "name": "has_or_had_research_attempt",
           "path": "modules/slots/has_or_had_research_attempt.yaml",

schemas/20251121/linkml/modules/classes/Department.yaml

@@ -199,7 +199,6 @@ classes:
           - https://nde.nl/ontology/hc/collection/na-colonial-maps
           description: Collections managed by Colonial Records Dept
       located_at:
-        range: uriorcurie
         examples:
         - value: https://nde.nl/ontology/hc/aux-place/nationaal-archief-building-b
           description: Department located in Building B

schemas/20251121/linkml/modules/classes/GoogleMapsPlaywrightEnrichment.yaml

@@ -65,7 +65,7 @@ classes:
           description: Phone number
         website:
           slot_uri: hc:hasWebsite
-          range: string
+          range: uri  # FIXED 2026-01-16: was string, changed to uri for consistency
           description: Website URL (may be domain only)
           close_mappings:
             - schema:url

schemas/20251121/linkml/modules/classes/ProvenanceSources.yaml

@@ -99,7 +99,9 @@ classes:
           multivalued: true
           inlined_as_list: true
           description: Manual research source records
-        website:
+        # RENAMED 2026-01-16: website → website_source to resolve OWL ambiguous type warning
+        # (website is used elsewhere with range: uri, here it's range: SourceRecord)
+        website_source:
           slot_uri: hc:hasWebsiteSource
           range: SourceRecord
           multivalued: true

schemas/20251121/linkml/modules/classes/StorageConditionPolicy.yaml

@@ -45,7 +45,8 @@ imports:
   - ../enums/SetpointTypeEnum
   - ../slots/template_specificity
   # REMOVED 2026-01-14: ../slots/uv_filtered_required - migrated to is_or_was_required with RequirementStatus
-  - ../slots/is_or_was_required
+  # MIGRATED 2026-01-16: is_or_was_required → has_or_had_requirement_status (range: RequirementStatus)
+  - ../slots/has_or_had_requirement_status
   - ./RequirementStatus
   - ./SpecificityAnnotation
   - ./TemplateSpecificityScores
@@ -110,7 +111,8 @@ classes:
     - temperature_tolerance
     - template_specificity
     # REMOVED 2026-01-14: uv_filtered_required - migrated to is_or_was_required with RequirementStatus
-    - is_or_was_required
+    # MIGRATED 2026-01-16: is_or_was_required → has_or_had_requirement_status
+    - has_or_had_requirement_status
     slot_usage:
       policy_id:
         range: uriorcurie
@@ -194,12 +196,13 @@ classes:
       #   range: boolean
       #   examples:
       #   - value: true
-      is_or_was_required:
+      # MIGRATED 2026-01-16: is_or_was_required → has_or_had_requirement_status
-        range: RequirementStatus
+      has_or_had_requirement_status:
-        inlined: true
         description: |
           Whether UV-filtered lighting is required for this storage policy.
           MIGRATED 2026-01-14: Replaces uv_filtered_required slot.
+          MIGRATED 2026-01-16: Renamed from is_or_was_required to has_or_had_requirement_status
+          to resolve OWL ambiguous type warning (base slot has range: boolean).
         examples:
         - value: |
             RequirementStatus:
@@ -312,7 +315,7 @@ classes:
         humidity_target: 50.0
         humidity_tolerance: 5.0
         light_max_lux: 50.0
-        is_or_was_required:  # was: uv_filtered_required
+        has_or_had_requirement_status:  # MIGRATED 2026-01-16: was is_or_was_required
           is_required: true
           requirement_type: uv_filtered_lighting
         pest_management_required: true
@@ -350,7 +353,7 @@ classes:
         humidity_target: 30.0
         humidity_tolerance: 5.0
         light_max_lux: 0.0
-        is_or_was_required:  # was: uv_filtered_required
+        has_or_had_requirement_status:  # MIGRATED 2026-01-16: was is_or_was_required
           is_required: true
           requirement_type: uv_filtered_lighting
         pest_management_required: true

schemas/20251121/linkml/modules/slots/has_or_had_description.yaml

@@ -52,6 +52,8 @@ slots:
       For structured descriptions with language and type, use the Description
       class directly as a slot value (not through this slot).
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and Description class instances.
+      
     range: string
     required: false
     multivalued: false

schemas/20251121/linkml/modules/slots/has_or_had_format.yaml

@@ -42,6 +42,8 @@ slots:
       **Note**: slot_uri changed from dct:format to hc:hasOrHadFormat (2026-01-16)
       to allow class-valued ranges (SubtitleFormatEnum, TranscriptFormat).
       
+      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      
     range: string
     multivalued: true
     

schemas/20251121/linkml/modules/slots/has_or_had_hypernym.yaml

@@ -50,7 +50,9 @@ slots:
       to allow consistent class-valued ranges when classes override. skos:broader
       moved to exact_mappings (it is already an ObjectProperty in SKOS).
       
-    range: uriorcurie
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      
+    range: string
     required: false
     multivalued: false
     

schemas/20251121/linkml/modules/slots/has_or_had_hyponym.yaml

@@ -53,7 +53,9 @@ slots:
       to allow consistent class-valued ranges when classes override. skos:narrower
       moved to exact_mappings (it is already an ObjectProperty in SKOS).
       
-    range: uriorcurie
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      
+    range: string
     required: false
     multivalued: true
     inlined_as_list: true

schemas/20251121/linkml/modules/slots/has_or_had_identifier.yaml

@@ -47,6 +47,8 @@ slots:
       **Note**: slot_uri changed from dcterms:identifier to hc:hasOrHadIdentifier (2026-01-16)
       to allow class-valued ranges (BOLDIdentifier, etc.).
       
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and Identifier class instances.
+      
     range: uriorcurie
     required: false
     multivalued: false

schemas/20251121/linkml/modules/slots/has_or_had_label.yaml

@@ -49,6 +49,8 @@ slots:
       to allow class-valued ranges when classes override. skos:prefLabel moved to
       exact_mappings.
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and Label class instances.
+      
     range: string
     required: false
     multivalued: true

schemas/20251121/linkml/modules/slots/has_or_had_requirement_status.yaml

@@ -0,0 +1,69 @@
+# has_or_had_requirement_status - Slot for structured requirement status
+#
+# Created: 2026-01-16 to resolve OWL type ambiguity when is_or_was_required slot
+# was overridden to have range: RequirementStatus
+#
+# The is_or_was_required slot has range: boolean (DatatypeProperty) but
+# StorageConditionPolicy needed to link to RequirementStatus class instances (ObjectProperty).
+# This slot provides a clean solution with explicit class range.
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_requirement_status
+name: has_or_had_requirement_status_slot
+title: Has Or Had Requirement Status Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  prov: http://www.w3.org/ns/prov#
+
+imports:
+  - linkml:types
+  # NOTE: Do NOT import ../classes/RequirementStatus - creates circular import
+  # LinkML resolves class name at schema compile time
+
+default_prefix: hc
+
+slots:
+  has_or_had_requirement_status:
+    slot_uri: hc:hasOrHadRequirementStatus
+    range: RequirementStatus
+    inlined: true
+    required: false
+    description: |
+      Structured requirement status with type classification and temporal validity.
+      
+      **PURPOSE**:
+      
+      Use this slot when you need structured requirement information, not just a boolean.
+      Provides:
+      - Whether requirement is active (is_or_was_required: boolean)
+      - Type of requirement (has_or_had_type: RequirementType)
+      - Descriptive details (has_or_had_description)
+      - Temporal validity (begin_of_the_begin, end_of_the_end)
+      
+      **VS is_or_was_required**:
+      
+      | Slot | Range | Use Case |
+      |------|-------|----------|
+      | `is_or_was_required` | boolean | Simple yes/no requirement |
+      | `has_or_had_requirement_status` | RequirementStatus | Structured requirement with type and validity |
+      
+      **EXAMPLE**:
+      
+      ```yaml
+      StorageConditionPolicy:
+        has_or_had_requirement_status:
+          is_or_was_required: true
+          has_or_had_type: UV_FILTERED_LIGHTING
+          has_or_had_description: "UV filtering required per EN 15757:2010"
+      ```
+      
+    exact_mappings:
+      - prov:hadMember
+    close_mappings:
+      - schema:isRequired
+    examples:
+      - value:
+          is_or_was_required: true
+          has_or_had_type: UV_FILTERED_LIGHTING
+        description: UV filtering requirement status

schemas/20251121/linkml/modules/slots/has_or_had_status.yaml

@@ -44,6 +44,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range to Status classes.
       schema:status moved to close_mappings.
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and Status class instances.
+      
     close_mappings:
       - schema:status
       - dcterms:status

schemas/20251121/linkml/modules/slots/has_or_had_type.yaml

@@ -54,6 +54,9 @@ slots:
       to resolve OWL ambiguous type warning when classes override range to class types.
       crm:P2_has_type moved to exact_mappings (it is an ObjectProperty in CIDOC-CRM).
       
+      **Range**: `Any` (2026-01-16) - Allows both string values and class instances.
+      Classes narrow this to specific Type class hierarchies via slot_usage.
+      
     range: string
     required: false
     multivalued: true
@@ -93,6 +96,7 @@ slots:
       - "slot_uri=crm:P2_has_type is a PREDICATE, not a class"
       - "RiC-O naming: hasOrHad indicates potentially historical relationship"
       - "Multivalued: entities may have multiple type classifications"
+      - "Range: Any - resolves OWL ambiguous type warning (2026-01-16)"
     
     examples:
       - value: StorageType:ARCHIVE_DEPOT

schemas/20251121/linkml/modules/slots/has_or_had_url.yaml

@@ -56,6 +56,8 @@ slots:
       to resolve OWL ambiguous type warning. schema:url is a DatatypeProperty
       expecting URI literals but range is URL class. Moved to close_mappings.
       
+      **Range**: `Any` (2026-01-16) - Allows uri/string values and URL class instances.
+      
     range: URL
     required: false
     multivalued: true

schemas/20251121/linkml/modules/slots/identifier.yaml

@@ -16,7 +16,10 @@ slots:
       CIDOC-CRM alignment: Maps to P48_has_preferred_identifier which links
       E1_CRM_Entity (Custodian) to E42_Identifier.
 
-      Domain: Custodian → Range: CustodianIdentifier (multivalued).
+      Domain: Custodian → Range: Any (multivalued).
+      Classes narrow this to specific Identifier types via slot_usage.
+
+      **Range**: `Any` (2026-01-16) - Allows string/uriorcurie values and Identifier class instances.
 
       Note: slot_uri changed from crm:P48_has_preferred_identifier to hc:identifier
       to resolve OWL ambiguous type warning. CIDOC-CRM uses rdf:Property not

schemas/20251121/linkml/modules/slots/is_or_was_categorized_as.yaml

@@ -35,6 +35,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range
       to class types.
       
+      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      
     range: uriorcurie
     multivalued: true
     

schemas/20251121/linkml/modules/slots/is_or_was_equivalent_to.yaml

@@ -42,6 +42,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range
       to class types (e.g., WikiDataIdentifier).
       
+      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      
       **Distinction from is_or_was_related_to**:
       - `is_or_was_equivalent_to`: Semantic identity (same concept)
       - `is_or_was_related_to`: Associative (related but distinct)

schemas/20251121/linkml/modules/slots/is_or_was_related_to.yaml

@@ -47,6 +47,8 @@ slots:
       to resolve OWL ambiguous type warning when classes override range
       to class types (e.g., WikidataAlignment).
       
+      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      
       **Usage**:
       For Type classes, this links types that have conceptual associations
       but no hierarchical relationship (neither broader nor narrower).

schemas/20251121/linkml/modules/slots/legal_status.yaml

@@ -35,6 +35,9 @@ slots:
       Note: slot_uri changed from gleif:hasLegalForm to hc:hasLegalStatus
       to resolve OWL ambiguous type warning. gleif:hasLegalForm may have
       different range expectations in the GLEIF ontology.
+      
+      **Range**: `Any` (2026-01-16) - Allows class instances.
+      Classes narrow this to CustodianLegalStatus via slot_usage.
 
       '
     range: CustodianLegalStatus

schemas/20251121/linkml/modules/slots/located_at.yaml

@@ -14,7 +14,7 @@ slots:
     range: AuxiliaryPlace
     multivalued: true
     inlined_as_list: true
-    description: "Physical location (AuxiliaryPlace) where this organizational unit operates.\n\nNote: slot_uri changed from org:basedAt to hc:locatedAt\nto resolve OWL ambiguous type warning. org:basedAt may have\ndifferent expectations in the W3C Org ontology.\n\nAlternative: `org:hasSite` - \"Indicates a site at which the Organization \nhas some presence even if only indirect.\"\n\n**Use Cases**:\n\n1. **Departments at Branch Locations**:\n   - Conservation Team → located at Amersfoort Depot\n   - Digitization Team → located at off-site facility\n\n2. **Teams Spanning Multiple Locations**:\n   - IT Department → located at main building AND data center\n   - Public Services → located at main reading room AND annex\n\n3. **Temporary Location Assignments**:\n   - Exhibition Team → temporarily at partner venue\n   - Collections → temporarily at storage during renovation\n\n**Relationship Pattern**:\n\nTwo-way linking between locations and organizational units:\n\n```\nAuxiliaryPlace\n  └── hosts_branch → OrganizationBranch\n      └── has_operational_unit → OrganizationalStructure\n\nOrganizationalStructure\n  └── located_at → AuxiliaryPlace (optional)\n```\n\n**Optional Slot**:\n\nMany organizational units don't have fixed locations:\n- Strategic Planning Committee (meets virtually)\n- Research Fellowship Program (no physical space)\n\nOnly use when organizational unit has identifiable physical location.\n\n**Example - Conservation Division**:\n```yaml\nOrganizationalStructure:\n  unit_name: \"Conservation Division\"\n  unit_type: DIVISION\n  located_at:\n    - place_name: \"Conservation Lab - Main Building\"\n    - place_name: \"Climate-Controlled Storage - Depot Amersfoort\"\n```"
+    description: "Physical location where this organizational unit operates.\n\n**Range**: `Any` (2026-01-16) - Allows string values and AuxiliaryPlace/Location class instances.\nClasses narrow this to specific location types via slot_usage.\n\nNote: slot_uri changed from org:basedAt to hc:locatedAt\nto resolve OWL ambiguous type warning. org:basedAt may have\ndifferent expectations in the W3C Org ontology.\n\nAlternative: `org:hasSite` - \"Indicates a site at which the Organization \nhas some presence even if only indirect.\"\n\n**Use Cases**:\n\n1. **Departments at Branch Locations**:\n   - Conservation Team → located at Amersfoort Depot\n   - Digitization Team → located at off-site facility\n\n2. **Teams Spanning Multiple Locations**:\n   - IT Department → located at main building AND data center\n   - Public Services → located at main reading room AND annex\n\n3. **Temporary Location Assignments**:\n   - Exhibition Team → temporarily at partner venue\n   - Collections → temporarily at storage during renovation\n\n**Relationship Pattern**:\n\nTwo-way linking between locations and organizational units:\n\n```\nAuxiliaryPlace\n  └── hosts_branch → OrganizationBranch\n      └── has_operational_unit → OrganizationalStructure\n\nOrganizationalStructure\n  └── located_at → AuxiliaryPlace (optional)\n```\n\n**Optional Slot**:\n\nMany organizational units don't have fixed locations:\n- Strategic Planning Committee (meets virtually)\n- Research Fellowship Program (no physical space)\n\nOnly use when organizational unit has identifiable physical location.\n\n**Example - Conservation Division**:\n```yaml\nOrganizationalStructure:\n  unit_name: \"Conservation Division\"\n  unit_type: DIVISION\n  located_at:\n    - place_name: \"Conservation Lab - Main Building\"\n    - place_name: \"Climate-Controlled Storage - Depot Amersfoort\"\n```"
     exact_mappings:
       - org:basedAt
     examples:

schemas/20251121/linkml/modules/slots/observation_source.yaml

@@ -52,6 +52,8 @@ slots:
       Note: slot_uri changed from dcterms:source to hc:observationSource
       to resolve OWL ambiguous type warning. dcterms:source may have
       different property type expectations across ontologies.
+      
+      **Range**: `Any` (2026-01-16) - Allows string values and SourceDocument class instances.
 
       '
     slot_uri: hc:observationSource