To edit any entry in a goods receipt voucher, you must first press the "Make Unposted" button. You can then make changes and when you are finished with the entries, if you want to save the document for further processing, you must press the "Create Journal" button again.
Deleting a Production Product Receipt
To delete the entire document, you must first press the "Make Unsaved" button and then you can use the "Delete" button.