A10. Third-Party Data Quarantine Log Records of supplier data deliveries that fail intake validation. Each entry records the delivery, the validation failures, the supplier notification, quarantine status, and resolution. The automated intake validation pipeline (Great Expectations or Soda Core) checks schema compliance, completeness, range and distribution, and anomaly detection. Deliveries that fail are routed to a quarantine holding area. Responsible party: Technical SME operates the pipeline. Data engineering team resolves quarantined deliveries. Regulations addressed: Article 10(3) (data preparation processes); Article 10(2)(f) (error detection). Key outputs

• Per-delivery validation failure record
• Resolution audit trail