HSDL for element entry - Error saying 'a logical end date is required'

Summary

HSDL for element entry - Error saying 'a logical end date is required'

Content

Prepared a HSDL template to load element entries. Effective End Date was configured as not required in set up. However, when i try to use that template to load values, it throws an error saying 'a logical end date' is required.  let me know if you have any insights.