have been trying to deploy an end to end IOT application using AWS.

I have created key pair .With the help of cloud formation created the stack required for the application.

Created certificates, policies for AWS IOT thing and attached to the thing.

Created rules for getting processed data from dynamoDB. The creation of IOT thing was successful, but the rules are not executing.

API test also working fine. But whenever accessing the end URL ,I am getting the results always as follows

{"Items":[],"Count":0,"ScannedCount":0}

Please help to resolve this issue. Thanks in advance