Recommendations on Qualification and Validation
The PIC/S recommendations on qualification and validation, written as guidance and a training resource for GMP inspectors and industry alike — which makes it, like PI 041, an unusually direct view of what inspectors expect. It covers the validation master plan, prequalification and the IQ/OQ/PQ stages for facilities, utilities, equipment and systems, requalification, process validation, and cleaning validation. PI 006-4 entered into force on 1 October 2026.
What this does not cover
stated in the document's own scope- It does not cover validation of GMP computerised systems, which is Annex 11.
- It does not treat analytical method validation in depth.
- It does not repeat topics covered by other specialised PIC/S documents, such as PI 007 on aseptic processes.
- It is guidance for applying Annex 15, not an alternative to it.
Always verify against the current published text before relying on it for a submission or inspection.
Overview
PI 006-4, Recommendations on Qualification and Validation, is the PIC/S guidance on putting the qualification and validation principles of Annex 15 into practice. It entered into force on 1 October 2026 and updates and renames PI 006-3 of 25 September 2007, which was titled “Recommendations on validation master plan, installation and operational qualification, non-sterile process validation, cleaning validation”. It covers areas PIC/S inspectorates identified as needing guidance beyond Annex 15, and is written as a training resource for inspectors and for industry.
Scope & applicability
The principles apply equally to active pharmaceutical ingredients, intermediates and finished dosage forms. Deliberately narrower than it looks: PI 006-4 does not cover computerised-system validation, which sits in Annex 11, does not treat analytical method validation in depth, and does not repeat validation topics already covered by other PIC/S documents such as PI 007 on aseptic processes. It supplements Annex 15 rather than restating it — the topics are the areas PIC/S inspectorates identified as needing more guidance than Annex 15 gives.
Legal basis & how it acquires force
A PIC/S recommendation document (PI series), adopted by the PIC/S Committee. It is guidance, not law. The binding principles are in Annex 15 of the PIC/S and EU GMP Guides, which participating authorities apply under their national law. The recommendations themselves say that qualification and validation may be addressed in a variety of acceptable ways and that inspectors will consider different approaches that comply with GMP principles.
Document structure
| Part | Covers |
|---|---|
| 1–2 Document history and introduction | Purpose, scope, aims, terminology, general comments, change control, organisation and planning, and quality risk management in qualification and validation |
| 3 Validation master plan | Principle, purpose, scope, format and content |
| 4 Prequalification and qualification | Prequalification stages, IQ, OQ and PQ for facilities, utilities, equipment and systems, and re-qualification |
| 5 Process validation | Prospective and concurrent validation, approaches for initial commercialisation, ongoing process verification and revalidation |
| 6 Other topics | Transportation verification, packaging validation for solid dose products, supporting utilities and test methods |
| 7–9 Cleaning validation, glossary and revision history | Cleaning validation from principle through limits and maintenance of a validated cleaning process |
Quick reference · PI 006 version history
Every version of the PIC/S qualification and validation recommendations, and the date each entered into force. PI 006-4 superseded PI 006-3 on 1 October 2026.
| Version | Entered into force |
|---|---|
| Adoption by PIC/S Committee | 10–11 December 1998 |
| PR 1/99-1 | 1 March 1999 |
| PI 006-1 | 1 September 2001 |
| PI 006-2 | 1 July 2004 |
| PI 006-3 | 25 September 2007 |
| PI 006-4 | 1 October 2026 |
PI 006-3 stood for nineteen years. If your validation master plan cites it by number, that citation has been stale since 1 October 2026 — and PI 006-4 also renames the document, so a title-based reference breaks too.
Source: PIC/S PI 006-4 §1 Document History. Verify against the current text before relying on it for a submission.
Key requirements
- Maintain a validation master plan with a defined principle, purpose, scope, format and content
- Run prequalification stages before the qualification stages proper, then IQ, OQ and PQ for facilities, supporting utilities, equipment and systems
- Define and justify requalification, rather than treating qualification as a one-time event
- Apply quality risk management principles throughout qualification and validation
- Validate cleaning processes, including visual inspection, sampling, detergents, analytical methods, limit-setting, and maintaining the validated state
- Govern change through the pharmaceutical quality system, which PI 006-4 treats as equivalent to change management
Implementation tips
- Since the 1 October 2026 changeover, any VMP, SOP or protocol citing PI 006-3 by number or by its old title needs updating
- Read §2.2 before assuming coverage — computerised systems and analytical methods are explicitly out of scope and live in Annex 11 and elsewhere
- Use §4 to structure prequalification and the IQ/OQ/PQ ladder for utilities and equipment, not just for process equipment
- Pair it with Annex 15: PI 006-4 is supplementary guidance on the areas inspectors found Annex 15 too thin on
Revision notes
PI 006-4 entered into force on 1 October 2026, superseding PI 006-3 of 25 September 2007 — a nineteen-year gap. It also renames the document: PI 006-3 was titled “Recommendations on validation master plan, installation and operational qualification, non-sterile process validation, cleaning validation”, and PI 006-4 is simply “Recommendations on Qualification and Validation”, reflecting the 2015 revision of Annex 15. PIC/S announced the revision on 30 July 2026; the working group was chaired successively by Norman Gray (MHRA) and then jointly by Kevin O’Donnell (HPRA) and Rebecca Dowd (US FDA). Separately, EMA and PIC/S have agreed a concept paper on revising Annex 15 itself (EMA/INS/GMP/163466/2026, 19 January 2026), so the underlying annex is also in motion.
Where this control fails
live FDA enforcementLive FDA recalls SPEQ maps to this standard’s topics — a SPEQ interpretation, not an FDA classification.
International alignment
The document points to Annex 15 for the basic principles and was revised following the 2015 revision of Annex 15. It applies equally to active pharmaceutical ingredients, intermediates and finished dosage forms. It leaves computerised system validation to Annex 11, analytical method validation largely to existing published guidance, and aseptic process validation to PIC/S PI 007.
PIC/S PI 006-4: frequently asked questions
Quick answers to common questions about PIC/S PI 006-4.
When did PI 006-4 take effect?
On 1 October 2026, replacing PI 006-3 of 25 September 2007. The document was first adopted by the PIC/S Committee on 10–11 December 1998.
Does PI 006-4 apply to API manufacture?
Yes. It states that its principles apply equally to active pharmaceutical ingredients, intermediates and finished dosage forms.
What is the aim of qualification according to PI 006-4?
To provide documentary evidence that facilities, supporting utilities, equipment and systems are suitable for their intended use; validation aims to show that control strategies are robust and processes reproducible.
This standard in practice
Recall domain is a SPEQ mapping of this standard’s topics, not an FDA classification.