Deviations are found at batch-record review,when the only option left is to scrap.

A GxP contract manufacturer runs continuous processing — granulation into tablet compression, or a sterile filling line — where every critical process parameter must stay inside a validated envelope: temperatures, pH, mixer torque, fill weights, room differential pressures under Annex 1.

The data that proves compliance lives in fragments: the historian holds the process trends, the MES holds the execution record, the LIMS holds the lab results, and the batch record ties it together — partly on paper. Every deviation triggers an investigation, a root-cause report, CAPA, and regulatory documentation.

Detection is too late to act. A mixer torque excursion, a fill-weight drift, a differential-pressure dip — the historian records them in real time, but nobody is reconciling historian, MES and LIMS during the batch. The excursion surfaces at batch-record review, days after fill, when corrective action is no longer possible. The only available response is to quarantine, scrap and investigate.

Then the paperwork half begins. QA reconstructs the timeline across three systems and a paper record, writes the deviation report from scratch, and defends it at audit. Reconciling fragmented records consumes quality-team weeks per quarter — and each audit means rebuilding the same picture again from the same fragments.