Try the following steps in order until the issue is resolved:
     
    • If it occurs randomly during data entry, turn off the auto-save.

       
    • Ensure that you are on version 7.61.790, patch 84 or higher.
       
    • Ensure all required fields are included
       
    • Delete the last blank row on the batch
       
    • Place the cursor at the beginning of the row and tab through the entire row.  This will remove any default values for a sequence of fields that is not necessary.