I have sold 2 items to same buyer. One has free postage. How do I remove the postage on the invoice.

[kangaroochi]

I am trying to send an invoice to a buyer who has bought two items. One has free postage. I am not clicking on the Recalculate

button and yet when I go to preview.............it keeps saying You must put in a postage charge. I removed the postage charge

prior to going to preview.  It wont let me send the invoice. Can someone please help me?

[kopenhagen5 · Accepted solution]

I think it is because you need to put something so just enter 0.00 in postage.

Hope you are well. 

(BTW, the plate is Chinese)