Index: ssts-tousse/src/main/java/com/forgon/disinfectsystem/tousse/toussedefinition/service/TousseInstanceManagerImpl.java
===================================================================
diff -u -r12814 -r12815
--- ssts-tousse/src/main/java/com/forgon/disinfectsystem/tousse/toussedefinition/service/TousseInstanceManagerImpl.java	(.../TousseInstanceManagerImpl.java)	(revision 12814)
+++ ssts-tousse/src/main/java/com/forgon/disinfectsystem/tousse/toussedefinition/service/TousseInstanceManagerImpl.java	(.../TousseInstanceManagerImpl.java)	(revision 12815)
@@ -1390,8 +1390,10 @@
 	@Override
 	public void setToDefaultWareHouse(Collection<TousseInstance> tousseInstances,
 			String orgUnitCoding) {
-		for(TousseInstance ti : tousseInstances){
-			setToDefaultWareHouse(ti,orgUnitCoding);
+		if(tousseInstances != null && !tousseInstances.isEmpty()){
+			for(TousseInstance ti : tousseInstances){
+				setToDefaultWareHouse(ti,orgUnitCoding);
+			}
 		}
 	}
 }