The credit retention system allows a candidate who attempts papers in a level or section and passes some of the paper(s) in the level or section to retain as credit(s) the paper(s) passed. A candidate is therefore required to sit for the failed paper(s) only. However, a candidate must pass the failed paper(s) in a level or section within the next two and a half years or five consecutive sittings. Otherwise, the credits will be withdrawn and the candidate required to resit all the papers in the level or section.