Rectification requires organisations to be able to correct inaccurate personal data wherever it is maintained

Somebody can require you to correct information about them that is wrong, wherever you hold it.

The obligation is easy to state and hard to meet when the same record has been copied into a warehouse, a reporting system, a supplier's platform and an export somebody keeps updating by hand. Correcting the source does not correct the copies, and the copies are what people are being judged by.

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