The configuration files for the VAT Validation module are in ini format and can also be edited manually with a suitable editor.
The file with the settings for the VAT Validation module can be found in the configuration directory under the file name
We recommend that you always use the configuration interface even when using the VAT Validation module as a CLI/service.
In case of support of a VAT Validation, we may request these files to replenish your exact configuration. As mentioned in the VAT Validation Debug case, these files may contain sensitive data. Please ensure that the files are protected from unauthorized access.
Please make sure that you have always backed up configuration files when changing them manually.