have you looked through this doc to get data into Splunk? There are multiple ways. Are you doing this through the GUI or through .conf files?
A simple way for a first contact:
For other options, you can try to do this:
You must have indexing disabled on that server (maybe a forwarder)? Either re-enable indexing on that instance, or try to create the data input on a Splunk instance that has indexing enabled.
@swarnendu30 - Looks like you have a few possible solutions to your question. If one of them provided a working solution, please don't forget to click "Accept" below the best answer to resolve this post. If you still need help, please leave a comment. Don’t forget to upvote anything that was helpful too. Thanks!