diff --git a/experiment/src/org/labkey/experiment/ExpDataIterators.java b/experiment/src/org/labkey/experiment/ExpDataIterators.java
index ccba14d2dfa..fd6dbcee703 100644
--- a/experiment/src/org/labkey/experiment/ExpDataIterators.java
+++ b/experiment/src/org/labkey/experiment/ExpDataIterators.java
@@ -1285,6 +1285,7 @@ else if (!_skipAliquot && _context.getInsertOption().mergeRows)
                 catch (ValidationException e)
                 {
                     getErrors().addRowError(e);
+                    throw getErrors();
                 }
             }
             return hasNext;