Can I reverse a receipt?
Yes, to a certain extent.
In Receipt entry, find the PO and pack slip previously received. Locate the received line you want to ‘unreceive’ and delete that line. If that line is the only line on the pack, you can delete the line and then delete the pack. If you’re going to receive the line again, you can keep the pack header and then make the receipt line again
If the receipt line has already been received and invoiced, you’ll have to request a debit memo from the supplier and apply it to that invoice. Then add a new pack line to receive that line again.