Problem

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

8193: Validation failed. Postcode is invalid because Postcode district not available.

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