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Material corrections to CoStudy question banks, most recent first. A catalogue this size will contain errors; what matters is how fast they are fixed once found.
This log records substantive corrections — a wrong rule, a stale exam blueprint, a defect that affected how a bank was scored or weighted. Routine additions and rewrites are not listed. If you have found something wrong, tell us and it will appear here once fixed.
| Date | Bank | Correction |
|---|---|---|
| 2026-08-10 | NMLS SAFE MLO (National Test) | The bank encoded a superseded content outline — Origination Activities at 21.9%, Ethics at 14.9%, Uniform State Content at 18.8%. The current NMLS outline weights these 27%, 18% and 11%. The bank was redistributed to the current weighting and the practice exams re-split to match. |
| 2026-08-10 | NMLS SAFE MLO (National Test) | One item stated the National Test is 125 questions with 10 unscored pretest items. It is 120 questions with 5 unscored. The item was rewritten. |
| 2026-08-10 | Catalogue-wide | A length-bias audit found banks where the correct answer was the longest choice in up to 97% of items, letting a candidate score well without reading the question. Affected items were rewritten to length parity and their rationales rebuilt to address every option. |
| 2026-08-10 | Databricks Generative AI | Twenty-eight items contained a corrupted token introduced by an earlier bulk find-and-replace. Corrected, and the whole catalogue re-scanned for the same defect. |
| 2026-08-08 | CompTIA A+ | Retargeted from the retired 1100 series to the current 220-1201 and 220-1202 exams, with the domain weightings updated to the 1200-series objectives. |
| 2026-08-08 | Microsoft Azure AI | AI-900 and AI-102 retired on 30 June 2026. The banks were retargeted to their successors, AI-901 and AI-103. |