The explicit error message is one of the most common roadblocks encountered by engineering students and university researchers using Ansys software solutions . This error halts the simulation solver entirely when a mathematical model contains more nodes, elements, or mesh cells than the installed tier of the license permits. 🛠️ The Core Cause: Ansys License Tier Constraints
Don't use 3D "Solid" elements for thin sheets or long wires. Converting a thin plate to a
To confirm exactly what limits you have:
import ansys.licensing as licensing lic = licensing.License() print(f"Max nodes allowed: lic.get_feature('mechanical').max_nodes") The explicit error message is one of the
Even if your visible mesh count is below the limit, the solver may still block you due to: Your product license has numerical problem size limits…..
Why You Exceeded the Limit (Even When the Mesh Looked Small)
Follow these steps to diagnose and bypass the numerical limit error. 1. Check Your Current Mesh Statistics Converting a thin plate to a To confirm
Reduce the complexity of the model to lower the cell count naturally.
Medium "Error from ANSYS: 'Your product license has numerical problem size limits verified.' Has anyone seen this? I'm trying to run a larger model and ANSYS is stopping with this license-related limit message. What does it mean and how can I increase the allowed problem size?"
In Ansys, licensing controls not just feature access, but also the complexity of the models you can solve. 1. License-Based Constraints Check Your Current Mesh Statistics Reduce the complexity
The limits vary significantly depending on the physics being simulated and the version of the software:
edition—that restricts the complexity of simulations you can run. This is not a "bug" but a built-in constraint of the license tier. Core Limits by Physics These limits represent the maximum allowable total count of nodes and elements (or cells) in your mesh: Structural (Mechanical): Typically limited to 32,000 nodes and elements Fluid Dynamics (CFD/Fluent): Typically limited to 512,000 cells/nodes . Some newer versions may allow up to 1 million cells. Electronics Desktop: Restricted to 64,000 3D volume elements HPC (Parallel Processing): Student versions are often capped at 4 to 16 cores Immediate Fixes & Workarounds
It is important to note that other error messages like Request name electronics_desktop does not exist in the licensing pool or FlexNet Licensing error -16, 10009 alongside System Error10054 (WinSockConnection reset by peer) are related to a separate issue: license server connectivity problems, not numerical size limits.
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
Set an alert in Mechanical when nodes exceed 90% of your license limit. Use *GET, maxnode, PARM, NODE, NUM_MAX in an APDL command snippet.