1. Requirement for advanced discrete-event simulation as the core deliverable.
- Consider Siemens Plant Simulation, FlexSim, or other specialist simulation tools for modeling and optimizing operations.
2. Inability to justify the PDMC bundle.
- If only layout capabilities are required, PDMC may be over-provisioned relative to narrower tools.
3. Need for cloud-native, real-time coauthoring similar to collaborative document platforms.
- FDU is desktop-oriented; organizations that require real-time multiuser coauthoring should evaluate cloud-native collaboration platforms.
4. Extremely strict version-lockstep operational constraints.
- If deployments cannot tolerate delays caused by host-product and FDU version alignment, assess operational risk and support readiness.
5. Very large, complex facility models with limited hardware budget.
- Documented performance sensitivity and recommended high-spec hardware indicate potential constraints for budget-limited environments.