GxP Validation
GxP is an umbrella term for quality guidelines and regulations in regulated industries: GMP (Good Manufacturing Practice for pharmaceuticals), GLP (Good Laboratory Practice), GCP (Good Clinical Practice), GDP (Good Distribution Practice), and others. Any computerised system involved in GxP-regulated processes — ERP, LIMS, MES, document management — must undergo Computerised System Validation (CSV) under the GAMP-5 framework, demonstrating that the system performs its intended function reliably and reproducibly.
Validation lifecycle
CSV follows a defined lifecycle: URS (User Requirements Specification) — what the system must do; FS/DS (Functional/Design Specification) — how it does it; IQ (Installation Qualification) — correctly installed; OQ (Operational Qualification) — works as designed; PQ (Performance Qualification) — works in actual use under real conditions. Each phase produces documented evidence retained for the lifetime of the system plus retention period (typically 10+ years).
ERP in regulated industries
ERP for pharma manufacturing, medical-device manufacturing, food processing or biotech must support validation: clear audit trails, role-based access controls, electronic signatures meeting 21 CFR Part 11 (US FDA) or EU Annex 11, change-control workflows, and the ability to produce IQ/OQ/PQ documentation packages. Specialist ERP for pharma: SAP S/4HANA Pharma, SAP Cloud ERP Public Edition, NovaTec Pharma, Werum PAS-X (MES). For medical devices and food: Sage X3 Process Manufacturing, BatchMaster.
Risk-based validation and effort
Modern CSV under GAMP-5 is risk-based: depth of validation scales with patient or product risk and with the criticality of the function. A GxP-impact assessment classifies each module (financials, production, batch records, electronic signatures) into risk categories. High-risk functions get full IQ/OQ/PQ with scripted test cases; configuration-only items get a lighter assessment. Typical effort for a mid-size pharma ERP project: 120 to 350 person-days for the validation deliverables alone — on top of the regular ERP-implementation budget. Re-validation triggers include version upgrades, patch deployments, schema changes and infrastructure migrations. Ongoing periodic review (annual) plus a change-control log are mandatory throughout the system's operational lifecycle.
Related Topics
Frequently Asked Questions
Is every ERP module validated separately?
Not necessarily. Risk-based validation under GAMP-5 categorises modules by impact: high-risk modules (batch records, electronic signatures, electronic batch release) require full validation; low-risk modules (employee training records, internal communications) may suffice with simpler verification. The validation plan defines scope per module.
What does an initial ERP validation cost in pharma?
Validation of a mid-market pharma ERP implementation typically adds 200,000-500,000 EUR to the project, on top of the standard implementation cost. The bulk is documentation work: writing URS, executing OQ scripts, capturing PQ evidence, producing the validation summary. Specialist consulting firms (Aizon, Eclipx, ProPharma) handle this as a service.
How often must a validated system be re-validated?
Continuously, in practice. Every significant change (version upgrade, customisation, new interface) triggers a change-control assessment and partial re-validation. Periodic reviews (annual or biennial) ensure documentation remains current. A full re-validation usually only happens for major version upgrades or platform migrations.