Users are encountering an error message stating 'Maximum length should not exceed 14 characters' during ITR-3 verification. This issue, often occurring after completing schedules and previewing, is proving difficult to pinpoint. Potential causes discussed include incorrect data entry in Schedule 112A, ISIN codes, company names, or decimal point issues with amounts. Solutions suggested involve reinstalling the latest utility, re-entering data carefully, and checking for specific formatting in Schedule 112A.