The stakeholders include all the people, organisations, and institutions that are part of the systems environment because the system provides benefit to them and they have an interest in the system.
A requirement is a statement that identifies a product or processes operational, functional, or design characteristic or constraint, which is unambiguous, testable, or measurable and necessary for product or process acceptability.
The stakeholder requirements provide a concise, non-technical description of what is being developed at a level that is accessible to senior management. They are linked with the entries of the Acceptance Test Plan.