diff --git a/server/AyaNova/biz/TranslationBiz.cs b/server/AyaNova/biz/TranslationBiz.cs
index 21c0cf0c..e66614a0 100644
--- a/server/AyaNova/biz/TranslationBiz.cs
+++ b/server/AyaNova/biz/TranslationBiz.cs
@@ -331,12 +331,21 @@ namespace AyaNova.Biz
 #endif
             var ret = await ct.TranslationItem.Where(z => z.TranslationId == UserTranslationId && param.Contains(z.Key)).AsNoTracking().ToDictionaryAsync(z => z.Key, z => z.Display);
 #if (DEBUG)
-            if(ret.Count!=param.Count){
-                  ILogger log = AyaNova.Util.ApplicationLogging.CreateLogger<TranslationBiz>();
-            
-            var missingItems = param.Where(p => ret.All(p2 => p2.Key != p));
+            if (ret.Count != param.Count)
+            {
+                ILogger log = AyaNova.Util.ApplicationLogging.CreateLogger<TranslationBiz>();
 
-            log.LogError($"********* GetSubsetAsync Non existant keys requested: {string.Join( ",", missingItems)}");
+                var missingItems = param.Where(p => ret.All(p2 => p2.Key != p)).ToList();
+                var duplicateItems = param.GroupBy(x => x)
+                  .Where(g => g.Count() > 1)
+                  .Select(y => y.Key)
+                  .ToList();
+
+                if (missingItems.Count > 0)
+                    log.LogError($"********* GetSubsetAsync problem: Non existant keys: {string.Join(",", missingItems)}");
+
+                if (duplicateItems.Count > 0)
+                    log.LogError($"********* GetSubsetAsync problem: Duplicate keys: {string.Join(",", duplicateItems)}");
 
 
             }