Here’s a useful response you can use (e.g., in an email, support ticket, or internal note) when dealing with ANSYS license limits related to problem size:
Subject: ANSYS License Numerical Problem Size Limits – Verified & Action Steps
After verification, your current ANSYS license imposes numerical limits on problem size (e.g., number of nodes/elements, DOF, or contact pairs). Once these limits are exceeded, the solver may:
Common limits by license type (examples):
What to do next:
ans_lic_info or check Help → License Information in Workbench.To permanently resolve recurring limit issues:
Contact your ANSYS reseller to request a license feature upgrade (e.g., HPC Pack, larger problem size caps, or unlimited nodes).
Seeing “ansys your product license has numerical problem size limits verified” is not the end of your simulation—it is a signal. It tells you that you have outgrown the boundaries of your current license tier or that you need to refine your meshing strategy.
Immediate action items:
lmstat or the solver log.Remember, the “verified” term means the license manager has checked and confirms a mismatch. It is not a bug—it is a feature designed to enforce commercial boundaries. By understanding these boundaries, you can either work creatively within them or make a data-driven case to management for a license upgrade.
Have you encountered this warning with a specific license type? Leave a comment below or contact your Ansys support channel for size limit exceptions.
The error message "Your product license has numerical problem size limits verified" typically appears when a simulation model exceeds the hard constraints of a non-commercial Ansys license. This most commonly affects users of Ansys Student or Academic versions, where the software restricts the complexity of models to ensure the free version is used for educational purposes rather than professional-grade production. Core Limits by License Type
License limits are primarily based on Node and Element (or cell) counts. Once your mesh statistics cross these thresholds, the solver will refuse to proceed.
This error occurs when your model's node or element count exceeds the capacity allowed by your specific Ansys license, a common restriction in free student and introductory academic versions. Standard License Limits
The limits vary significantly depending on the physics being simulated and the version of the software:
Structural & Thermal Physics: Typically limited to 32,000 nodes/elements. Here’s a useful response you can use (e
Fluid Dynamics (CFD): Generally capped at 512,000 nodes/cells, though some newer versions (like 2025 R1) may allow up to 1 million cells.
Academic Versions: Limits can vary from 16k to 512k nodes depending on whether the license is "Introductory," "Intermediate," or "Research". Why It Might Fail Even If Your Count Is Low
Sometimes the error appears even when you are technically under the limit. This is often due to Node ID fragmentation:
The Highest ID Problem: Some licenses check the highest node ID rather than just the total count. If you have 1,000 nodes but one is numbered "40,000," the solver may fail.
Hidden Connection Elements: Boundary conditions, remote loads, or moments can add "hidden" connection elements to the total count at the start of a solve, pushing a "borderline" model over the limit. How to Resolve the Error
Renumber Mesh Nodes: This is the most effective fix for high ID numbers. Right-click on Model > Insert > Mesh Numbering. Set Compress Node Numbers to Yes. Right-click Mesh Numbering and select Renumber Mesh.
Simplify Geometry: Use midsurfaces to convert solid bodies into shell elements or use beam elements for thin supports. This drastically reduces node counts compared to 3D solid meshing. Subject: ANSYS License Numerical Problem Size Limits –
Apply Symmetry: If your part is symmetrical, simulate only a half or quarter of it and use Symmetry Boundary Conditions to keep the mesh size within limits.
Reduce Mesh Density: Use Local Mesh Sizing to keep high detail only in critical areas and coarsen the mesh elsewhere.
Project Maintenance: If a model fails once, the error can sometimes "stick" in the Setup cell. Try duplicating the Model cell and creating a fresh Setup cell to reset the license check. Your product license has numerical problem size limits…..
User: Maria, graduate researcher in mechanical engineering.
Model: Turbine blade thermal-stress analysis.
License: ANSYS Academic Teaching (limit: 512k nodes).
Error: “ANSYS Your product license has numerical problem size limits verified.”
Solver output: License limit: 500,000 nodes. Current model: 508,242 nodes.
Resolution path:
lmstat – identified ANSYSACADEMICTEACHING.If symmetry had not been possible, her alternative would be requesting an Academic Research license token from her department.