5.1.1. Declaring selected alternatives for a bean archive

• Each child <class> element must specify the name of an alternative bean class. If there is no class with the specified
  name, or if the class with the specified name is not an alternative bean class, the container automatically detects the problem
  and treats it as a deployment problem.
• Each child <stereotype> element must specify the name of an @Alternative stereotype annotation. If there is no annotation
  with the specified name, or the annotation is not an @Alternative stereotype, the container automatically detects the
  problem and treats it as a deployment problem.
• If the same type is listed twice under the <alternatives> element, the container automatically detects the problem and
  treats it as a deployment problem.

8.2. Decorator enablement and ordering

• Each child <class> element must specify the name of a decorator bean class. If there is no class with the specified name,
  or if the class with the specified name is not a decorator bean class, the container automatically detects the problem and
  treats it as a deployment problem.
• If the same class is listed twice under the <decorators> element, the container automatically detects the problem and
  treats it as a deployment problem.

9.4. Interceptor enablement and ordering

• Each child <class> element must specify the name of an interceptor class. If there is no class with the specified name, or if
  the class with the specified name is not an interceptor class, the container automatically detects the problem and treats it as
  a deployment problem.
• If the same class is listed twice under the <interceptors> element, the container automatically detects the problem and treats it as
  a deployment problem.