Amazon Rekognition Compare Photos Access Denied Exception

I want to compare two photos. When I connected to AWS I try to connect to AmazonRekognitionClient:

CompareFacesResult result = new 
AmazonRekognitionClient(credentialsProvider).compareFaces(request);

But have this error:

Caused by: com.amazonaws.services.rekognition.model.AccessDeniedException: User: arn:aws:sts::475877890857:assumed-role/wsirstpp-20181028230251-unauthRole/CognitoIdentityCredentials is not authorized to perform: rekognition:CompareFaces (Service: AmazonRekognition; Status Code: 400; Error Code: AccessDeniedException; Request ID: 7f665a07-db54-11e8-8773-2de830a9e39f)

Full code for getting information about photos:

ByteBuffer image1 = ByteBuffer.wrap(imageSource);
ByteBuffer image2 = ByteBuffer.wrap(imageTarget);

CompareFacesRequest request = new CompareFacesRequest()
    .withSourceImage(new Image().withBytes(image1))
    .withTargetImage(new Image().withBytes(image2))
    .withSimilarityThreshold(70 F);

CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
    context,
    "us-east-2:My_pool_Id", // Identity pool ID
    Regions.US_EAST_2 // Region
);

CompareFacesResult result = new AmazonRekognitionClient(credentialsProvider).compareFaces(request);

List < CompareFacesMatch > faceMatches = result.getFaceMatches();

for (CompareFacesMatch match: faceMatches) {
    Float similarity = match.getSimilarity();
    Log.d(TAG, "run: similarity:" + similarity.toString());
}

What is wrong? What I did wrong in this code?

The cause was in Cognito rules. Firstly need to create a rule and then edit rule