To ensure reliable and consistent data quality throughout the process (Figure ), the data validation library Pydantic 60 is used to validate the input data and to provide a convenient way to convert the input data into the internal data format. Furthermore, Pydantic is also used to validate the output data and convert the output data into the desired output format with the respective data type and labels. As mentioned in the description of Figure , object-oriented design requires well-defined interfaces to procedure reliable fit insights.