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For this, it is necessary to ensure that the requirements specification contains no errors and that it specifies the user's requirements correctly.
Also, errors present in the SRS will adversely affect the cost if they are detected later in the development process or when the software is delivered to the user.
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.
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.