Expiry date in cycle counting for batch numbers

Hi All

We are do our cycle counting process in warehouse and every time system is adding qty  for an item , system is asking for batch numbers and I know its for real as we have set batch number as the tracking dimension group.

But at the same time system is asking for  expiry date, which is unusual and we have not set up any shelf life period for items. How to get rid of this?

Please advice