Active Data guard standby database not showing in Data Guard tab (4229011)

Primary and standby Oracle databases were first added Oracle agents. 

After discovering the environment in the Data Guard tab successfully by entering the Data Guard environment name, when trying to add it again the message (in red) appears "The specific name already exists. Ensure entering a unique environment name."

If a different name is used for the data guard, the primary RAC database is not listed as a primary database.

The Standby and Primary data guard roles are recognized by the agent but the process to check the list of primary data guard servers does not seem to find the standby.

Restart the primary and standby agents in Administration | Agents | Agent Status

Clear the Data Guard settings by running the following groovy script in Administration | Tooling | Script Console | Scripts. Please fill in the primary and standby agent names from the Administration | Agents | Agent Status

list =["RAC-DEMOPRD1","MYSERVER1.MYDOMAIN.COM-DEMOPRD11","MYSERVER2.MYDOMAIN.COM-DEMOPRD1","RAC-DEMOPRD2","MYSERVER3.MYDOMAIN.COM-DEMOPRD21"];
functionHelper.invokeFunction("system:oracle_dataguard_installer.updateDataGuardEnvName",null,list  );
functionHelper.invokeFunction("system:oracle_dataguard_installer.updateDataGuardDestName", null, list );

then after 15 minute, reconfigure the Data Guard