During adop phase=prepare get ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

This is one of those where I'm left scratching my head. During the clone I was getting issues with the LOCAL_LISTENER parameter. The clone would not complete with this value set. Now when I go and create a new adop session using
adop phase=prepare
I get the following error
[ERROR]     Cannot connect to database
[ERROR]     Error Message: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor (DBD ERROR: OCIServerAttach)

I found a note to fix the issue and what does it say. I need to set the LOCAL_LISTENER. So I set the listener and now it runs. Again I'm lost for words with this new system of cloning and patching in R12.2

Reference

• adop phase=prepare fails with: Error Message : ORA-12514: TNS:listener does not currently know of service requested in connect descriptor (Doc ID 2007225.1)