Restrictions usually apply to the number of primitives or mesh complexity.
If you believe your mesh is small but the error persists, the Ansys Learning Forum is the best place to post your project files for a license check. Restrictions usually apply to the number of primitives
For professional work, moving to a Pro, Premium, or Enterprise license removes these numerical bottlenecks entirely. moving to a Pro
If you are seeing the message in your output file or solver console, you have encountered the built-in "governor" of an Ansys academic or entry-level license. Restrictions usually apply to the number of primitives
Ansys offers various licensing tiers ranging from free student versions to high-end enterprise packages. To keep the student versions accessible, Ansys limits the complexity of the models you can solve.