@com.fasterxml.jackson.annotation.JsonProperty("RequestId")
    public void setRequestId(String requestId) {
        this.requestId = requestId;
    }
<p>
The identifier for each request. This value is a globally unique ID that is generated by the identity store
service for each sent request, and is then returned inside the exception if the request fails.
</p>

@param requestId
       The identifier for each request. This value is a globally unique ID that is generated by the identity
       store service for each sent request, and is then returned inside the exception if the request fails.
aws-java-sdk-identitystore/src/main/java/com/amazonaws/services/identitystore/model/AccessDeniedException.java