Hello ,

As your query is you have applied in Anna University for the Second year lateral entry counselling procedure but you didn't received any acknowledgement letter. I would like to tell you that there is nothing to panic about sometimes due to website errors or any other issue this situation might have occurred. In my opinion it would be better to communicate with the administration or admission cell of Anna University of there would be any other way they will help you with that too. 

Further, if you still face any other issue or query, you can let me know in the comment section below I can help you with that too.

I hope your query is solved.

Thank you.