I can’t delete a certain line in my model, why won’t FEMAP allow me to delete it?

Femap has a built in associativity feature when creating entities. It can be difficult to recognize where the associativity is with a given entity. If the entity needs to absolutely be deleted such as a line, one method to remove the associativity is to use Modify > Associativity and remove the associativity of the nodes or elements from that particular entity. From there, the User can delete the entity using the Delete pulldown.