Run the following to identify the blank line
SELECT * FROM DELHEAD
Then run the following to delete the record
DELTE FROM DELHEAD WHERE Delivery_Note_No = ''
We have a blank line at the top of the Delivery Note Maintenance screen.
Run the following to identify the blank line
SELECT * FROM DELHEAD
Then run the following to delete the record
DELTE FROM DELHEAD WHERE Delivery_Note_No = ''