Mapping failure

mapping failure

        PutMappingResponse pmResponse = getNodeClient().admin().indices().preparePutMapping(indexName)
                .setSource("{\n" +
                        "    \"_default_\" : {\n" +
                        "        \"dynamic_templates\" : [\n" +
                        "            {\n" +
                        "                \"index_nonanalyzed\" : {\n" +
                        "                    \"match\" : \"*\",\n" +
                        "                    \"match_mapping_type\" : \"string\",\n" +
                        "                    \"mapping\" : {\n" +
                        "                        \"index\" : \"not_analyzed\"\n" +
                        "                    }\n" +
                        "                }\n" +
                        "            }\n" +
                        "        ]\n" +
                        "    }\n" +
                        "}"
                )
                .execute().actionGet();