Validation

Validation may refer to ...

   Verification and validation, in engineering, confirming that a product or service meets the needs of its users
   Verification and validation (software), checking that a software system meets specifications and fulfills its intended purpose
   Validation of foreign studies and degrees, processes for transferring educational credentials between countries
   Validation (drug manufacture), documenting that a process or system meets its pre-determined specifications and quality attributes
   Data validation, in computer science, ensuring that data inserted into an application satisfies defined formats and other input criteria
   Regression model validation, in statistics, determining whether a model fits the data well
   XML validation, the process of checking a document written in XML to confirm that it both is "well-formed" and follows a defined structure
   Social validation, compliance in a social activity to fit in and be part of the majority
   the validation of an analytical test method, to show that it is suitable for the purpose it is used
   Forecast verification, validating and verifying prognostic output from a numerical model
   Validation therapy, a therapy developed by Naomi Feil for older people with cognitive impairments and dementia

https://en.wikipedia.org/wiki/Validation