I am using Phoenix verion :4.10.0-HBase-1.2

I am getting below error while creating new schema:

What does mean by ensure on client and server ??
What changes i need to do ??

please give me any suggestions..

Properties properties = new Properties();
properties.setProperty("phoenix.schema.mapSystemTablesToNamespace", "true");
properties.setProperty("phoenix.schema.isNamespaceMappingEnabled", "true");
Connection connection = DriverManager.getConnection("jdbc:phoenix:...:/hbase", properties);