Errors refer to listings that contain inadequate or flawed information and are thus prevented from being uploaded to the site (e.g., they contain inappropriate language, are missing a required field, have no price, etc.).
As anyone with a Delta can tell you, not the same as mistakes (which see).
A matchcover category whose design was unintentionally printed incorrectly by the manufacturer and accidentally released in a customer's order. Errors include misprints, mis-cuts, double design, color mis-registration, color missing, 40-sticks with two 20-stick design imprints side by side, front designs printed inside, etc. (See Irregulars).
most common paper money errors are: -design and engraving errors -printing errors: incomplete printing, offset printing, double printing, out of registry printing, misplace print, misplace, offset image or lack of signature or date, ink smears, inverted back. -numbering errors: mismatched prefix letters or serial numbers, partial digit serial number, missing number, misplace serial number, duplicate serial number -cutting and folding errors: folds before printing, folds before cutting, cut out of registry, cut of size. -overprint errors: double print, inverted print etc.