The configuration files for the VAT Validation module are in JSON format and can also be edited manually with a suitable editor. When editing, please use only editors, which can perform syntax checking and validation to avoid malfunctions.
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.