# pdf/fail/invalid-data-extracted
The statement was correctly identified and some or all of the data was extracted. However various validation checks on the extracted data failed.
This often happens when a statement has been modified by the user. Check the score and authenticity to see whether the pdf has been modified.
Note: there are 2 different types of data that is extracted from the pdf - statement info (like name and address of account holder) as well as the financial transactions from the grid
- its possible the the transaction extraction succeeded and the statement info extraction failed, or perhaps there was only a small number of errors with the transaction extraction
- in the above case you may be able to use the transactions that were extracted and you can download the partial result and check it for yourself (by clicking on the green download icon at the end of the pdf row)
- however: be careful of using this data:
- there may be subtle extraction problems that are hard to spot (like an incorrect date or amount which only affects a handful of transactions);
- and if the user modified the transactions then it won't be clear which ones were modified.
See the guide on identifying modified statements for more.