To export discount codes, go to the Admin. Go to Settings → Discount and choose a discount code group, click on 'Discount codes'. Then click 'Export'. The discount codes are downloaded in a .csv file, which you can open via Excel.
To import discount codes, press 'Import'. Choose a file and press 'Import'. The codes in the file are added. In case of any error messages, a file is downloaded with a specification of the error messages.
