Data Extraction is a two-step process consisting of first the file validation and second the data extraction.
File Validation
First, it is checked whether the expected file is included in the uploaded data (only applies to ZIP uploads).
If the associated File Uploader expects a ZIP Upload, the correct file is identified
using the provided file path (this is skipped for single file uploads).
Second, it is checked whether the uploaded file is in the expected file format.
Third, it is checked whether the identified file contains allexpected fields.
If any of these validation steps fail, the participant will be shown an
exception message explaining what went wrong and no data is extracted.