When customizations are submitted in the Database Designer, an entry is generated for all API Collections and single objects in the Customer Generated layer(), even if you have not customized all the tables. When associations write their Customer layer, all they have to do is inherit from the Customer Generated layer. This eliminates human errors that can occur from forgetting what layer to inherit the Customer layer.
TMA
Resources recommends you change the inheritance of the Customer layer
from “Base” or “Generated” to “Customer Generated” or “User”.

