Establishing documented evidence that the system does what it purports to do.
The action of proving, in accordance with the principles of GxP, that any procedure, process, equipment material, activity or system actually leads to the expected results.
Establishing documented evidence which provides a high degree of assurance that a specific process will consistently produce a product meeting its predetermined specifications and quality attributes. FDA Guidelines on General Principles of Process Validation, May 1987.
Confirmation, through the provision of objective evidence, that the requirements for a specific intended use or application have been fulfilled.
(ICH Q7) A documented program that provides a high degree of assurance that a specific process, method, or system will consistently produce a result meeting pre-determined acceptance criteria.