add minOccurs to NXhistory/NXactivity

FAIRmat-NFDI · Feb 7, 2025 · 7ae4a56 · 7ae4a56
1 parent 2475c02
commit 7ae4a56
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/base_classes/NXhistory.nxdl.xml b/base_classes/NXhistory.nxdl.xml
@@ -28,7 +28,7 @@
          Ideally, a full report of the previous operations (or links to a chain of operations).
          Alternatively, notes allow for additional descriptors in any format.
     </doc>
-    <group type="NXactivity">
+    <group type="NXactivity" minOccurs="1">
         <doc>
              Any activity that was performed on the physical entity prior or during the experiment.
         </doc>