Problem

I have tried printing a DPD shipping label/adding a DPD shipping integration and am seeing an error returned:

(401) Unauthorized 

Solution

This error is being returned, because incorrect credentials are entered in Linnworks.net > Shipping > Integrations > DPD Config. DPD credentials need to match with MyDPD credentials that you use to log in to DPD portal. 

DPD UK portal: https://www.dpd.co.uk/umslogon/public/doLogon.do

DPD Local portal: https://www.dpdlocal.co.uk/umslogon/public/doLogon.do

If the password was updated in the config but the error remains, please contact Linnworks support to revoke the daily access token.