SQL Server Error Code – 19477 the availability group ‘%.*ls’ already h

In this blog post, you’ll learn more about the SQL Server Error Code 19477 and the error message description that is shown

SQL Server Error Code

19477

SQL Server Error Description for the Code :19477

The availability group ‘%.*ls’ already has a listener with DNS name ‘%.*ls’.  Availability groups can have only one listener. Use the existing listener, or drop the existing listener and create a new one.