The _zotero_key() functions in add_carrier_to_zotero.py, add_zipcode_to_zotero.py, and bib/sync.py used ascii_uppercase + digits which includes 0, 1, and O — characters outside Zotero's allowed set [23456789ABCDEFGHIJKLMNPQRSTUVWXYZ].
The _zotero_key() functions in add_carrier_to_zotero.py, add_zipcode_to_zotero.py, and bib/sync.py used ascii_uppercase + digits which includes 0, 1, and O — characters outside Zotero's allowed set [23456789ABCDEFGHIJKLMNPQRSTUVWXYZ].