Before validation, a validation plan and validation samples (together the validation set) are produced. To avoid bias from knowledge of the implementation, the validation set is applied by a party not involved in design, implementation or verification; where that is impossible, the validation approach is documented clearly and consistently so an independent party can review its impartiality. The plan normally sets black box tests mapped directly to the agreed requirements, each with inputs and expected outputs, and tests deliberately stress the processes and their tools. The set receives a final check that it is adequate for the stated requirements, especially when a third party's set is used; without a clear statement that it fits the agreed requirements the validation may be treated as incomplete and the processes as unvalidated. That check is overseen by the organization responsible for acting on investigation results, not left to the third party alone.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.