Correction workflow
- Reproduce the issue using the public page and source record.
- Verify game, set, card code, printing, language, condition and grading label.
- Correct the identity mapping or presentation without fabricating missing observations.
- Re-run consistency checks before publishing the change.
- Update the visible modified date when editorial meaning changes.
Historical observations
A corrected mapping can move an observation to the right card, but it must not turn an asking price into a completed sale or create a price that was never observed. Material series corrections are handled separately from normal daily updates.
Report a problem
Use the contact page and include the page URL plus the strongest primary-source evidence available. Privacy and security reports should never include passwords or authentication tokens.