How to attach screen shots to automated test cases

Ravikiran07 my apologies when you said TC I thought you meant TestComplete rather than the TestCase. 

I assume you are uploading XML as per https://support.smartbear.com/zephyr-squad-server/docs/test-automation/api.html#upload-file

Is there a log/attachment tag parsed into the XML from Test NG?  

You may need to add this if its not

KR

Vinnie