I have tried printing a TNT label and I am seeing an error returned:

The request to ExpressConnect Shipping has failed. Please contact your local service centre for further assistance; For input string: "<?xml version="1.0" encoding="UTF-8" standalone="yes"?><runtime_error><error_reason>login details not recognised</error_reason></runtime_error>"


The following error message appears when credentials used in the Account Details section are incorrect.

To fix this issue, you would need to get in touch with TNT directly and confirm which credentials need to be used for 3rd Party integrations. Once you will receive the correct Username and Password, enter them in Shipping > Integrations > Config > under Account Details header:

If the error message will still be the same, feel free to get in touch with Linnworks Technical Support!

Additional information

How to add TNT integration