diff --git a/src/check_method.ttl b/src/check_method.ttl
index 74906ca..38910ee 100644
--- a/src/check_method.ttl
+++ b/src/check_method.ttl
@@ -176,6 +176,19 @@ aec3po:hasNestedTarget a owl:ObjectProperty ;
     rdfs:range aec3po:CheckMethod ;
     rdfs:isDefinedBy aec3po:check_method .
 
+aec3po:hasTarget a owl:DatatypeProperty ;
+ rdfs:label "hasTarget"@en ;
+ rdfs:comment "TBD"@en ;
+rdfs:range [
+        rdf:type rdfs:Datatype ;
+        owl:unionOf (
+            xsd:string
+            xsd:boolean
+            xsd:decimal
+        )
+    ] .
+
+
 aec3po:FunctionCheckMethod a owl:Class ;
     rdfs:label "Function Check Method"@en ;
     rdfs:comment "Methods of check defined by functions. The function can be general purpose, not tied to specific project and reused i.e. getArea(), getVolume(). This concept is equivalent to the Execution class in the Function ontology: https://fno.io/spec/ "@en ;