Validating a requirement

Requirements verification and validation requires reviewing requirements according to an inspection checklist in order to evaluate the correctness of their attributes.

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If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email alternativeformats@ It will help us if you say what assistive technology you use.This guidance accompanies government policy on information requirements for planning applications, including design and access statements and the validation process.The purpose of the walk through was to identify gaps in the ‘to” be business process.This was one way of determining if there were gaps because all teams were in new positions, the actual project roll out was not until for over a year and the systems requirements were still being determined. The first team starts out with the customer and gathers information.In such a case, it might be advisable to talk to the customer and attempt to get the requirement rewritten in more precise terms.

Sometimes, a multitude of derived requirements is simply unavoidable.

As we all wait for the order to arrive in our work queue, we realize how much time is actually spent with the customer – gathering information, using tools to detail maps.

We have a conference bridge set up – and we hear ‘ customer group calling design’ and design answering.

Requirements must clearly define what is considered successful fulfillment of the requirement (success case). So, a test that stimulates a condition of 51 PPM carbon monoxide within 5 feet of the heating unit should produce a user alert withing 2 seconds." If no alert is produce, then failure.

If the alert is produced at exactly 3 seconds after the precipitating condition, then failure. In cases where tolerance ranges are acceptable, the requirement specification should define the tolerance range in its description so that clear thresholds can be established and used to deterministically distinguish successes from failures.

Requirements that are known to have dependencies, but have no dependency information in their specification need to be re-analyzed ensuring that all dependencies are captured before being added to the SRS.