Check a DAT, OPT or LFP for gaps, duplicates, backwards sequences and page-count errors — before the other side does. Runs locally; the production never leaves your machine.
Load a metadata file (DAT/CSV), an image file (OPT/LFP), or both. Everything is checked locally — nothing is uploaded.
No files loaded.
The audit runs as soon as files land: page-sequence check, document-range check, and — with both kinds loaded — a cross-file reconciliation.
| Check | Where | What it means |
|---|---|---|
| Gap | Page keys | A Bates number is missing between two consecutive pages |
| Duplicate | Page keys | The same key appears twice |
| Backwards | Pages & ranges | The sequence or a range runs in the wrong direction |
| Prefix / padding change | Pages | The alpha prefix or zero-padding changes mid-sequence |
| PAGECOUNT mismatch | DAT/CSV | Bates span and declared page count disagree |
| Range overlap | DAT/CSV | Two documents claim the same pages |
| Image-count mismatch | OPT/LFP | Declared page count disagrees with the rows before the next break |
| Orphan / missing page | Cross-file | A page outside every BEGBATES–ENDBATES range, or a range page with no image row |
| Document-count mismatch | Cross-file | Metadata rows and image-file break flags describe different document sets |
See the DAT, OPT and LFP guides for why each of these fails silently at import.
Primary sources only — the statute, form or paper this page is built on.