Click Add Key in your service group settings, search for Splunk, specify a name, and click Save.
In the Keys page, where your key is now listed, click Authenticate.
Follow the instructions in the dialog to get your key.
As stated in the dialog, choose Integrations | API on the Splunk On-Call site to copy the API ID and API Key.
To verify that the connector is set up correctly, do the following.
Add a new action in a script.
Search for the actions related to Splunk, choose the one you need, and click Add.
Fill out the inputs.
Assign the key that you created earlier.
Run the script and take note of the output in Transposit.