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10.2.3. Ambiguous or Unsatisfied Dependencies

Ambiguous dependencies exist when the container is unable to resolve an injection to exactly one bean.
Unsatisfied dependencies exist when the container is unable to resolve an injection to any bean at all.
The container takes the following steps to try to resolve dependencies:
  1. It resolves the qualifier annotations on all beans that implement the bean type of an injection point.
  2. It filters out disabled beans. Disabled beans are @Alternative beans which are not explicitly enabled.
In the event of an ambiguous or unsatisfied dependency, the container aborts deployment and throws an exception.
To fix an ambiguous dependency, see Section 10.2.3.3, “Use a Qualifier to Resolve an Ambiguous Injection”.
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