Hi,
the file reader, when it fails, only provides a rather unspecific log message:
2025-01-12 12:46:22,027 ERROR File Reader 3:1 Execute failed: The following columns are not contained in all source files: [Column1, Column2, Column3, Column4, Column5, Column6, Column7, Column8, Column9, Column10, Column11, Column12, Column13, Column14, Column15, Column16, Column17, Column18, Column19, Column20, Column21, Column22, Column23, Column24, Column25, Column26, Column27, Column28, Column29, Column30, Column31, Column32, Column33, Column34, Column35, Column36, Column37, Column38]
I’d like to suggest extending that by the file(s) that actually fail to match the format.
Best
Mike