When creating a Listener for an AlwaysOn Availability group, I received the below error:

I was a little confused to start with given I had created many Always on Availability groups before. Then I remembered something. I had moved the objects in AD to tidy up and released the Cluster Account didn’t have permissions on that OU to create computer objects:

Right click the OU your SQL Servers and AAAG Computer accounts are and give it the following permission Create Computer Object:

Now retry creating your Listener in the SQL Management Studio.