Wrong report about a SPARQLTarget

[VladimirAlexiev]

When validating electrical CIM Advanced SHACL shapes with SPARQLTarget:

• Go to https://www.itb.ec.europa.eu/shacl/shacl/upload
• Upload this shape https://raw.githubusercontent.com/Sveino/Inst4CIM-KG/refs/heads/develop/source/CGMES/v3.0/SHACL/ttl/61970-301_Equipment-AP-Con-Complex-SHACL_v3-0-0.ttl
• select "extended and best practices"
• click Validate then Aggregated report

You see this error

Using the values of sh:prefixes as defined by 5.2.1 Prefix Declarations for SPARQL Queries, the values of sh:select must be valid SPARQL 1.1 SELECT queries with a single result variable this
Value:

SELECT DISTINCT ?this WHERE { 
  ?this rdf:type cim:PowerTransformer . 
  FILTER NOT EXISTS {?this ^cim:PowerTransformerEnd.PowerTransformer/cim:TransformerEnd.endNumber 3}. }

There is no info to identify the shape, but only this one matches the query:

equ:PowerTransformer-twoWinding
        a               sh:NodeShape ;
        sh:property     equ:PowerTransformerEnd-secondWindingValues ;
        sh:target  
        [
              a sh:SPARQLTarget ;
              sh:prefixes cim: ;
              sh:select """
                SELECT DISTINCT ?this
                WHERE {
                  ?this rdf:type cim:PowerTransformer   .
                  FILTER NOT EXISTS {?this ^cim:PowerTransformerEnd.PowerTransformer/cim:TransformerEnd.endNumber 3}.
                }
                """ ;
        ] .      

This SPARQL query is valid, and the prefix used is declared at the beginning of the file:

cim:    
    a           owl:Ontology ;
    owl:imports sh: ;
    sh:declare [
        a sh:PrefixDeclaration ;
        sh:namespace "http://iec.ch/TC57/CIM100#"^^xsd:anyURI ;
        sh:prefix "cim" ;
    ] ;

[costas80]

Thanks for raising this @VladimirAlexiev. I'll try to replicate this to see why the finding was reported and to improve the validator's feedback.