Error Message "Quantity Returned is Greater Than" in SR****

I cannot create a receipt journal for this in Arrival Overview.After selecting the PO to receive, we normally tick the “Select for Arrival” column in the details screen only for items we want to receive. It doesn’t allow us to do this right now.

“Error: The quantity being returned is greater than what can be covered by the return lot”

please tell me why this error is prompting n i cnt make anychanges?

shan.