Oracle Message ORA-16206 - database already configured as Logical Standby database

ERRORdatabase already configured as Logical Standby database
CAUSEThis database has been previously configured as a Logical Standby database. A Logical Standby database is not capable of processing the requested operation.
ACTIONEnsure that you entered the command on the correct database as this database is a Logical Standby and is not capable of servicing the request.