Error Location Does Not Exist

Qad version EE

Menu: RMA receipts

While doing the RMA receipts, "Location does not exist " error is coming.

Site and Location is available and also the entered location is available under the site. Not sure why it is coming.

I could do the receipt for one line in the order. But not for the second line.

Please advise. Thanks in advance!
is it possible that the inventory has a different expire date?
Maybe the message is not complete. The second line is trying to add inventory to an existing inventory lot but not all attributes are the same. (expire date, reference etc).