Minor correction
Typographic, formatting, or link problem that does not change meaning or findings.
Methodology and research standards
Explicit correction protects research trust more effectively than preserving an error or silently replacing material.
This policy explains how errors are reported and reviewed, the difference among minor correction, material correction, revision, reissue, and withdrawal, and how versions, records, and notifications are managed.
Typographic, formatting, or link problem that does not change meaning or findings.
A figure, label, or methodological description affecting understanding of a finding.
A broader update to data, analysis, interpretation, or structure.
A newly numbered and dated version replacing an earlier issue.
Removal of reliance on material that is no longer valid, safe, or lawfully available.
New data added on a disclosed schedule without implying the earlier version was erroneous.
Users may report an incorrect figure, inconsistency, translation problem, broken link, privacy concern, or misleading use. The report should identify the page or file, table or location, and supporting evidence or explanation.
A nonmaterial error may be corrected directly, with the page-update date changed where appropriate. Not every punctuation change requires a public notice, although operationally relevant changes remain recorded.
A revision is used where data, methodology, analysis, or interpretation change substantially. The new version has a number, date, and change log and explains whether earlier findings remain wholly or partly valid.
Material may be withdrawn where error or failure prevents reliance, personal information was exposed, publication rights were absent, manipulation or plagiarism is established, or publication creates unacceptable risk. A withdrawal notice and reference may remain rather than deleting every trace.
Review whether the issue affects Arabic, English, PDF, HTML, tables, charts, or data. Correcting one format does not establish that every format was corrected.
Honest error reporting is not treated as misconduct or personal failure. Concern for reputation must not prevent staff or users from raising a genuine problem.
A page may show publication date, latest update, version, and correction or withdrawal notice. The Center maintains a more detailed internal record of decisions, reasons, approvals, and affected files.
| Level | Examples | Usual response |
|---|---|---|
| Editorial | Typographical, link, or formatting issue not changing meaning. | Correct and update date or brief record where needed. |
| Limited | Figure or secondary description not changing the main conclusion. | Clear correction identifying location and effect. |
| Material | Data, weight, question, or analysis error changing a conclusion. | Prominent notice, new version, and review of derived outputs. |
| Invalidating | Fabricated data, serious breach, or design incapable of supporting the material. | Withdrawal or suspension with an appropriate public statement. |
An author, staff member, client, participant, reader, or external organization may report a concern. Technical language or proof is not required at submission; identifying the material, location, and reason for review is sufficient.
Where a material error is suspected, relevant versions, data, code, and correspondence are preserved under restricted access. Source files are not altered before documentation, and change records must not be deleted to conceal the error or responsibility.
An update adds new data or context to material that was correct when published; a correction addresses an error in the prior version. “Update” should not conceal an error, and a minor editorial change should not be described as a material correction.
A commissioner may request review of an error, confidentiality issue, or contractual right, but cannot redefine an inconvenient finding as an error. Requests are assessed against evidence, methodology, and agreement, and the decision is recorded.
Where a dataset changes, a new version number identifies affected cases, variables, values, and reanalysis rules. A file is not silently replaced, and a record allows users to identify the version they used.
Material may be suspended during investigation where risk of harm or misinformation is high. A notice states that the material is under review without prejudging the outcome, followed by republication, correction, or withdrawal.
A withdrawal page normally remains available to explain that the material should no longer be relied upon, with a general reason, date, and replacement link where applicable. Complete deletion can leave external copies without context.
The author or affected organization may request review and provide new evidence. Review should involve a person or body other than the initial decision-maker where possible, and appeal does not automatically restore the material.
Action does not end with file correction. The cause is reviewed to determine whether templates, training, checks, access, or responsibilities must change, with follow-up on implementation.