DPD may return the error message: DPD failed: Error trying to create consignment in DPD. Dpd said: Error code1009 - Invalid postcode value., if you are trying to ship a parcel/order without a valid postcode value in the customer's address. It may be blank, or the value isn't just correct.
Please make sure that the postcode of the delivery address set in Brightpearl is correct and/or not left blank/empty. If you are sure that the postcode is correct, and still getting the same error message, please contact us so we can help you as much as we can.