Problem


I have tried printing a DHL Parcel UK shipping label and am seeing an error returned:


Validation failed. Postcode is invalid because does not match any known UK Mail postcode districts. 


Solution


The error means that an incorrect postcode was submitted, please edit the order and add a correct postcode. 


For example, UK postcodes can be validated via the following website: https://www.royalmail.com/find-a-postcode