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Despite best efforts, sometimes the requirements management techniques described in the previously mentioned articles are insufficient.
This occurs most often when users are unsure of their needs or leading-edge technology is needed to meet requirements.
Additional validation procedures also include those that are designed specifically to ensure that modifications made to an existing qualified development flow or verification flow will have the effect of producing a product, service, or system (or portion thereof, or set thereof) that meets the initial design requirements, specifications, and regulations; these validations help to keep the flow qualified.
It is a process of establishing evidence that provides a high degree of assurance that a product, service, or system accomplishes its intended requirements.
It is a process that is used to evaluate whether a product, service, or system complies with regulations, specifications, or conditions imposed at the start of a development phase.
They elicit, develop, analyze, communicate, and manage requirements, as well as facilitate stakeholder engagement and agreement on system requirements.Verification and validation are independent procedures that are used together for checking that a product, service, or system meets requirements and specifications and that it fulfills its intended purpose.These are critical components of a quality management system such as ISO 9000.This often involves acceptance of fitness for purpose with end users and other product stakeholders. It is sometimes said that validation can be expressed by the query "Are you building the right thing?" "Building the right thing" refers back to the user's needs, while "building it right" checks that the specifications are correctly implemented by the system.