The rib height does not meet the requirement in gear upholstery.
The Complete Message:
The tooth height does not meet the requirement in gear upholstery. (TS500 11.3.2)
Increase the tooth height of the solid and so-called ribbed (ribbed/waffle) flooring until the condition is met.
Select the ribbed/waffle laying.
Enter the properties.
In the Ribbed/Waffle tab, enter the value that satisfies the condition in the Thread Height (H) line and click the OK button.