List of Error Categories
Format errors- Incorrect field tags (F1), incorrect indicators, Incorrect or missing subfield code, and Incorrect or missing punctuation and space.
Content errors- missing fields(M1), inconsistency between fields, incorrect call number, and incorrect subject headings.
Editing and inputting errors- incorrect use of upper and lower case(E1), use of CJK-mode punctuation, and misspellings.
Romanization errors- mis-romanizations(RO1), incorrect word division & hyphenization, and wrong diacritics.