For submitted or approved work, open the read-only uncertainty workspace. Confirm the budget revision, calculation-policy version, point and stage, combined standard uncertainty, effective degrees of freedom, coverage factor, expanded uncertainty, and integrity hash.
Review every information, warning, and blocking finding. For warning acknowledgements, verify the explicit reason, authorising member, timestamp, status, and version. Withdrawn acknowledgements remain visible with their withdrawal reason and timestamp.
For each as-found and as-left point, expand the component breakdown and confirm the input value, distribution, resolved divisor, sensitivity coefficient, standard uncertainty, standard contribution, degrees of freedom, unit, and any frozen source record and content hash.
For Type A repeated components, compare the observation count, mean, and sample standard deviation with that component's recorded observation table. Each observation is linked by both component-result ID and stable component ID. The table retains each decimal string at its stored precision together with its unit, recording membership record ID, and timestamp; the interface formats decimal measurements to three places for readability only.
Membership UUIDs are shown deliberately as fixed provenance identifiers. They identify the exact organisation membership that performed the calculation or recorded an observation without substituting a mutable display name.
Use Audit identifiers and integrity hashes to inspect the exact point evaluation, measurement point, budget revision, calculating membership, budget content hash, and point content hash.
Approval validates the frozen calculation. It does not recalculate using today's budget or reference-standard profile.
For externally_reported work, compare each numeric entry or documentary statement with its retained certificate, exact page or section, source reference, point and stage. Verify U and its unit when stated; verify k only when supplied. An unstated U or k remains unknown. Documentary statements do not provide numeric values for calculations.
For percent-of-reading U, review the original percentage, explicit signed reading basis and its unit, linked point and as-found or as-left stage, and the server-derived absolute U. Check zero and negative source readings as recorded rather than substituting a positive basis. Compatible-unit conversion does not replace the original provenance or justify inventing k.
For declared U, review the exact independently approved declaration, method, measured range, conditions, U, k and approved validity. Approval of the source alone does not establish suitability for this work or permit an accredited claim.
Review the submitted frozen uncertainty and measurement revisions together with retained source evidence. Where audit identifiers and content hashes are provided, compare those exact frozen records; later draft changes, replacement certificates or newer source revisions do not rewrite what was submitted or approved.
Applicable ISO 17025 dossiers and equipment evidence packs use the same canonical uncertainty JSON. They do not silently recalculate or present a different historical result.
Related: Uncertainty calculation status reference, Resolve uncertainty warnings, and Generate an equipment evidence pack.