USE50 Vertex not found in %FUNCTION%.
Explanation
The specified vertex cannot be found in the original geometry.
User response
Verify that the X, Y, M, and Z values (if any) of the vertex to be updated or deleted exactly match.
The specified vertex cannot be found in the original geometry.
Verify that the X, Y, M, and Z values (if any) of the vertex to be updated or deleted exactly match.