public void setFailureReason(String failureReason) {
        this.failureReason = failureReason;
    }
<p>
The reason why the custom vocabulary was not created.
</p>

@param failureReason
       The reason why the custom vocabulary was not created.
aws-java-sdk-connect/src/main/java/com/amazonaws/services/connect/model/VocabularySummary.java