How Can I show info message on my incident record when child records are added in it via list collec

[Anmol12]

How Can I show info message on my incident record when child records are added in it via list collector?
I have tried by using after update business rule but it is not working.

Any suggestion or help is appreciated.

[Mark Manders]

That will show a message on the child record that get's attached to a parent. What is your business requirement?