Problem

This error message occurs:


<ConditionData> Validation Failure: Site Id is wrong </ConditionData>


Cause

The wrong DHL configuration has been enabled in Magento.


Solution

Use the correct configuration section for the DHL extension. It is located here:




When using the DHL extension, make sure not to enable any other DHL configuration in Magento. If you do this, you are enabling the DHL integration for the USA, which is not compatible with DHL Germany.