Selected products and product components are validated to ensure they are suitable for use in their intended operating environment.
The validation methods, procedures, criteria, and the environment are used to validate the selected products and product components and associated maintenance, training, and support services.
Validation activities are performed throughout the project lifecycle.
Validation activities are performed by the acquirer, the supplier, or both parties in accordance with the supplier agreement.
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CMMI-ACQ 1.2
4. 
SG 2 Validate Selected Products and Product Components