From 106f91afbc0a47978a2b846c833e802388bd20a7 Mon Sep 17 00:00:00 2001
From: Konstantin Krivopustov <krivopustov@haulmont.com>
Date: Sat, 1 Apr 2017 19:23:05 +0400
Subject: [PATCH] Fix confusing exception message

---
 .../com/haulmont/cuba/web/gui/components/WebAbstractList.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/web/src/com/haulmont/cuba/web/gui/components/WebAbstractList.java b/modules/web/src/com/haulmont/cuba/web/gui/components/WebAbstractList.java
index 616809fd1f..162c0f0600 100644
--- a/modules/web/src/com/haulmont/cuba/web/gui/components/WebAbstractList.java
+++ b/modules/web/src/com/haulmont/cuba/web/gui/components/WebAbstractList.java
@@ -102,7 +102,7 @@ public abstract class WebAbstractList<T extends AbstractSelect, E extends Entity
         Set itemIds = new HashSet();
         for (Entity item : items) {
             if (!datasource.containsItem(item.getId())) {
-                throw new IllegalStateException("Datasource doesn't contain items");
+                throw new IllegalStateException("Datasource doesn't contain item to select: " + item);
             }
             itemIds.add(item.getId());
         }