Each guide answers one question a change owner or QA reviewer actually asks, cites the regulation, and shows the weak version next to the defensible one. Read them in module order or jump to the one you need today.
What EU GMP Chapter 1, Annex 15, ICH Q10 and ICH Q7 actually require of a change management system, what falls inside it, what is genuinely like-for-like, and why sites lose the validated state one uncontrolled change at a time.
Read the guideHow to classify a change on the site's quality system scale and, separately, on the regulatory scale: EU variation types IA, IB and II under Regulation (EC) 1234/2008, the classification guideline, and substantial changes under the MDR for devices.
Read the guideHow to run an impact assessment that covers validation, cleaning, stability, analytical methods, regulatory, quality agreements, supply, documentation and training, with the people who can actually answer, and the evidence to show why the answer is no.
Read the guideThe difference between approving a change and approving its implementation, how to build an action plan whose pre-requisites gate go-live, what verification means, and why dates on the change record are the first thing an inspector checks.
Read the guideWhat Annex 15 11.5 and ICH Q10 3.2.3 mean by evaluating effectiveness, how to define the measure and the window when the change is raised, why closing on completion is a finding, and how to trend the change control system itself.
Read the guideHow Annex 11 section 10 and GAMP 5 second edition apply to changes to validated computerised systems: configuration versus customisation, patches and cloud releases, regression testing, the audit trail as evidence, and why IT change and GMP change control cannot be separate systems.
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