We have many assets with non-compliant names, which I have to fix.
I need help with that, because I dont have so much experience and I am not sure how to find correct names.
Please tell us more about your use case. In what context are you "fixing" asset names? How do you want Splunk to help with that? What is the desired end result?
You may be able to normalize names in a query, but Splunk won't be able to change the names on the assets themselves.