This chapter lists the constraints and requirements attached to the operational items of the architecture. The constraints are the external constraining elements that set the terms for whatever solutions are implemented while the requirements are the needs and requests of the user that define the contract or agreement to be carried out.

The lists of requirements and constraints are displayed in alphabetical order with an additional column for the comments. A paragraph is added for each listed constraint and requirement to explain their constrained objects.

If constraints and requirements are created from objects in Operational node structure diagrams (NOV-2), these constraints and requirements can be retrieved in the Optional Rules Model chapter provided the "View Type" property is set to Operational. The constraints are then retrieved in the Operational Constraints folder while the requirements are retrieved in the Operational Requirements folder of the NOV-6a navigation tree.