> For the complete documentation index, see [llms.txt](https://gitbook.bergelsonlab.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook.bergelsonlab.com/data-pipeline/audio/clan-check.md).
# CLAN Check - Troubleshooting
Common errors you might get when you run CLAN check (Esc+L).
## Complaint: Utterance delimiter expected
**Solution:** Place a period before the timestamp bullet.
## Complaint: Utterance delimiter must be at the end of the utterance
**Solution:** Remove excess periods. This usually happens on a CHN tier. It should have one period on the last line of the tier. You can remove any periods before the last tier.
## Complaint: Duplicate code tiers per one main tier are NOT allowed
**Solution:** change one %com to %xcom
## Complaint: Use TAB character instead of space character after Tier name
On every line, between the colon and the beginning of the content should be a TAB. If it's just a space, CLAN will highlight it and you can erase the space and add a TAB. Weird formatting means they'll *look* the same to the naked eye.
## Complaint: Upper case letters are not allowed inside a word.
Same goes for punctuation within words. CLAN won't allow periods or apostrophes within annotated words.
## Complaint: Timestamp Issues
If you get timestamp errors in CLAN, flag the issue to lab staff either through an Asana task, an email, or in person.