Production planning is a connected workflow rather than a single activity. A conceptual view may move from customer demand through production planning, material availability, production order, manufacturing, quality checks, finished goods, and warehouse activity.
Dependencies define the workflow
Planning decisions depend on information and conditions that may be owned by different people or teams. Demand, material availability, production readiness, quality outcomes, and warehouse capacity can all affect the intended path.
Requirements need more than a happy path
Analysis should consider user roles, data needed at each stage, process dependencies, and exception scenarios. This creates a basis for discussing what the system needs to support without turning a conceptual model into confidential implementation detail.
Validation needs a business lens
Validation is stronger when it asks whether the workflow supports the operational decisions people need to make. Acceptance criteria should connect observable system behavior back to the process purpose.