lib/schemacop/v3/one_of_node.rb in schemacop-3.0.19 vs lib/schemacop/v3/one_of_node.rb in schemacop-3.0.20

@@ -34,10 +34,13 @@
         matches = matches(super_data)
 
         if matches.size == 1
           matches.first._validate(super_data, result: result)
         else
-          result.error "Matches #{matches.size} definitions but should match exactly 1."
+          result.error <<~PLAIN.strip
+            Matches #{matches.size} schemas but should match exactly 1:
+            #{schema_messages(data).join("\n")}
+          PLAIN
         end
       end
 
       def validate_self
         if @items.size < 2