It is not possible to generate coupon codes for value vouchers. This is in an attempt to prevent obvious, yet no less dangerous scams on the part of the customer and also to prevent attempts to launder money. Coupon codes are also not applicable to value vouchers.
Coupon codes can only be generated for offers that are not archived. If an offer is inactive but not in the archive, a coupon code can be created. Click here to find out how to deactivate an offer.