A customer wants their data corrected, how do I handle that across systems?

The right to rectification requires timely correction of inaccurate or incomplete data. It gets tricky when data sit in multiple systems, with derivatives, exports and backups.

Try this first

1. 1Pick the source system per data type. Address usually lives in CRM or HR, not scattered across mail templates and stray spreadsheets.
2. 2Update at the source and let downstream systems sync. Not via monthly export-import, but via API or scheduled sync.
3. 3Make derivatives visible. Reports, data warehouse, BI. Document whether correction propagates or comes through on next refresh.
4. 4Confirm in writing what changed, in which systems, and which recipients (sub-processors, partners) you notified.
5. 5Stick to the GDPR deadline: without undue delay, at most one month. Extend once by two months for complex requests, with reasoning.

None of the above fits?

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