diff --git a/lib/seek/json_metadata/attribute.rb b/lib/seek/json_metadata/attribute.rb
index ff03848100..388d2155fc 100644
--- a/lib/seek/json_metadata/attribute.rb
+++ b/lib/seek/json_metadata/attribute.rb
@@ -78,9 +78,9 @@ def linked_sample_type_and_attribute_type_consistency
         if sample_attribute_type && linked_sample_type && !seek_sample? && !seek_sample_multi?
           errors.add(:sample_attribute_type, 'Attribute type must be SeekSample if linked sample type set')
         end
-        if seek_sample? && linked_sample_type.nil? && !is_isa_compliant_input?
+        if seek_sample? && linked_sample_type.nil? && !is_isa_compliant_template_input?
           errors.add(:seek_sample, 'Linked Sample Type must be set if attribute type is Registered Sample')
-        elsif seek_sample_multi? && linked_sample_type.nil? && !is_isa_compliant_input?
+        elsif seek_sample_multi? && linked_sample_type.nil? && !is_isa_compliant_template_input?
           errors.add(:seek_sample_multi, 'Linked Sample Type must be set if attribute type is Registered Sample List')
         end
       end
@@ -94,12 +94,10 @@ def check_value_against_base_type(value)
         base_type_handler.validate_value?(value)
       end
 
-      def is_isa_compliant_input?
-        if is_a?(SampleAttribute)
-          input_attribute? && sample_type.is_isa_json_compliant?
-        else
-          input_attribute?
-        end
+      def is_isa_compliant_template_input?
+        return input_attribute? if is_a?(TemplateAttribute)
+
+        false
       end
     end
   end