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When documenting business requirements, sometimes it’s helpful to use a process
diagram. This shows step-by-step how a process works, where approvals or decisions
need to be made, and so on. Process diagrams also come in handy when mapping out
business processes. For example, the PMO may have a process diagram that
documents how a project idea turns into a project. It starts with a project idea, goes to
the selection committee, and returns to the PMO to either proceed into a full-fledged
project or for the idea to be archived or placed in a hold status. Figure 4.1 shows a
simple process diagram.
FIGURE 4.1 Sample process diagram
Functional Requirements
Functional requirements are the product characteristics needed for the product to
perform. They are typically behavioral in nature or performance oriented and may also
describe elements such as color, quantity, and other specifications. For example, if
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