If the Skill Based Planning Compliance Level is set up as 'Error' in the Asset Management Setup
Then - the Resource (when has missing skills which are set up in the Resource lines) is not applied to the line.
On the simulated lines there is a possibility to check the result based on the skills.
When the set up is as 'Error' then no resource is added to the line (even it it set up in Resource Allocations).
When the set up is as 'Warning' then an information about missing skills is visible.