| 1001 | Syntax error. You started PDF Forms Flattener but left out the name of your input PDF document, or the output document, or otherwise made an error in your command syntax. | |
| 1002 | The input PDF document was not found. | |
| 1003 | The system could not create output PDF document. Verify that you have write permissions to the folder, that the file is not already open, and that the output file path name is valid. | |
| 1004 | PDF Forms Flattener dependencies were not properly loaded. Your installation may be corrupt. Please reinstall the product. | |
| 1005 | There was an error importing the data file, it may be corrupt. | |
| 1006 | The input PDF document uses XFA but an attempt was made to import an AcroForm data file. | |
| 1007 | The input PDF document uses an AcroForm but an attempt was made to import an XFA data file. |