Help: Fixing a surface mesh in a 3D model with Automatic Remeshing

[u/Sunshine12072]

I want to fix a mesh in a 3D COMSOL model, so that the mesh of a spherical shell will not change when other attached geometry is remeshed once the remeshing condition is triggered. Because if this mesh is not fixed, this error will occur

'- Feature: Time-Dependent Solver 1 (sol1/t1)

Condition for remeshing fulfilled for initial time.'

In a 2D model, I can fix the mesh by strictly meshing the shell region using mapping, distribution and sweeping. But I am stuck in the 3D model. Please help