IPA: /ʌnˈkɔːrɛktəbl/
KK: /ʌnˈkɔrɛktəbl/
Something that cannot be fixed or changed back to a correct state.
The errors in the document were deemed uncorrectable, so a new version had to be created.
Uncorrectable → It is formed from "un-" (meaning not), "correct" (from Latin "correctus", meaning to set right or make straight), and "-able" (meaning capable of). The word "uncorrectable" means not capable of being set right or made straight.
Think of 'not' ('un-') being able to 'set right' ('correct') — that's why 'uncorrectable' means something that cannot be fixed.