# Class\_cast\_exception for dynamic field with "." in its name **URL:** \ **Category:** Elasticsearch\ **Created:** [November 29, 2018, 8:14pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819 "2018-11-29T20:14:31Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Steven\_Ensslen](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/steven_ensslen/32/26984_2.png) [@Steven\_Ensslen](https://discuss.elastic.co/u/Steven_Ensslen)\ **Post date:** [November 29, 2018, 8:14pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819/1 "2018-11-29T20:14:31Z")
I have an index with dynamic\_templates set as follows ``` "dynamic_templates": [ { "all_dynamic_as_keyword": { "match_mapping_type": "*", "mapping": { "type": "keyword", "ignore_above": 256 } } } ], ``` I later some data arrives that has new fields like: ``` "order_survey": { "2. Adult Name": "N/a", "1. Adult Name": "Someones Name", "1. Child Name/Age": "A Childs name" }, ``` At that point`GET index/_mapping` shows ``` "order_survey": { "properties": { "1": { "properties": { " Adult Name": { "type": "keyword", "ignore_above": 256 }, " Child Name/Age": { "type": "keyword", "ignore_above": 256 } } }, "2": { "properties": { " Adult Name": { "type": "keyword", "ignore_above": 256 }, " Child Name/Age": { "type": "keyword", "ignore_above": 256 } } }, ``` This has occurred because some previous, similar data worked. However some of the data returns ``` { "index": { "_index": "ticket-v8", "_type": "doc", "_id": "ffadc8e9-2016-1ec4-7135-9b8806d36ae0", "status": 400, "error": { "type": "mapper_parsing_exception", "reason": "failed to parse", "caused_by": { "type": "class_cast_exception", "reason": "org.elasticsearch.index.mapper.KeywordFieldMapper cannot be cast to org.elasticsearch.index.mapper.ObjectMapper" } } } ``` } Removing the `dynamic_templates` from the index fixes the problem. I am completely confused. Once one document has been seen with a field, then that field is mapped, and dynamic\_templates are no longer involved. Right? So how can the behavior of a second document with the same field be affected by dynamic\_templates? Also, even though the mapping has split "1" and "2" into their own objects, when the data is queried the document comes back: ``` "order_survey": { "1. Adult Name": "An Adults name", "1. Child Name/Age": "A childs name/9yrs. of age", "2. Adult Name": "Another adults name" }, ``` I appreciate that the index design leaves a lot to be desired. I'm trying to discover why the error occurs. Thanks, Steven ---
**Author:** ![jpountz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jpountz/32/45836_2.png) [@jpountz](https://discuss.elastic.co/u/jpountz)\ **Post date:** [December 7, 2018, 5:05pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819/2 "2018-12-07T17:05:09Z")
Can you give an example of a document that triggers the above error? ---
**Author:** ![jpountz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jpountz/32/45836_2.png) [@jpountz](https://discuss.elastic.co/u/jpountz)\ **Post date:** [December 7, 2018, 5:07pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819/3 "2018-12-07T17:07:41Z")
I noticed that the error message reports that the type name is `doc` while the above get-mappings call returns `order_survey` as a type. Could it be that the same field is mapped as an object in one type and as a keyword in another type? ---
**Author:** ![Steven\_Ensslen](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/steven_ensslen/32/26984_2.png) [@Steven\_Ensslen](https://discuss.elastic.co/u/Steven_Ensslen)\ **Post date:** [December 11, 2018, 8:42pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819/4 "2018-12-11T20:42:45Z")
Hi, order survey is **not** a type, it is an object. I did not include the whole mapping, only the portion of interest. ---
**Author:** ![Steven\_Ensslen](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/steven_ensslen/32/26984_2.png) [@Steven\_Ensslen](https://discuss.elastic.co/u/Steven_Ensslen)\ **Post date:** [December 11, 2018, 8:59pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819/5 "2018-12-11T20:59:22Z")
This document triggers the error: ``` { "@timestamp" => 2018-12-11T20:54:24.433Z, "membership_code" => "1876614", "event_session_id" => "b62b828b-3f70-0124-51e1-bcd815955228", "seller_name" => "confidential data removed", "slug" => "confidential data removed", "valid_flag" => true, "identity_email" => "PII removed", "event_name" => "confidential data removed", "group_flag" => false, "cart_id" => "72fe80c5-4b9d-6444-72b6-ba75695e188d", "id" => "8960d6a2-68b1-6073-eba2-a7cab025bdc2", "purchased_on" => 2018-11-29T16:03:46.000Z, "identity_extra" => { "city" => "PII removed", "address" => "PII removed", "phone" => "PII removed", "zip_code" => "PII removed", "from_re" => "2018-09-18T06:36:20Z", "state" => "PII removed", "country" => "PII removed" }, "seller_id" => "2a3edbe8-b0dc-4158-3246-c723b7f0b9d5", "cart_number" => "72FE80C5", "order_number" => "4JB-RFK-973Y", "relevant_at" => 2019-02-23T00:00:00.000Z, "order_and_session" => "48e3424c-7d6d-15fa-a7a4-33888e672bbb:b62b828b-3f70-0124-51e1-bcd815955228", "order_id" => "48e3424c-7d6d-15fa-a7a4-33888e672bbb", "identity_name" => "PII removed", "event_category" => "Upsell", "ticket_type_name" => "Adult", "face_value" => "65.00", "gl_code" => "41406-0-523-0000-0000", "adjusted_value" => "65.00", "@version" => "1", "search" => " 72FE80C5 PII removed 2018-09-18T06:36:20Z PII removed 1876614 4JB-RFK-973Y PII removed B6D3AF9C86", "start_datetime" => 2019-02-23T00:00:00.000Z, "ticket_group_name" => "Individual", "event_template_id" => "9631a246-aa51-ee65-49e2-99df3b713079", "order_survey" => { "1. Child Name/Age" => "PII removed/9yrs. of age", "1. Adult Name" => "PII removed", "2. Adult Name" => "PII removed" }, "identity_id" => "0a53a0a2-3999-836c-ba25-c7218337aad6", "channel_id" => "cms" } ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 8, 2019, 8:59pm UTC](https://discuss.elastic.co/t/class-cast-exception-for-dynamic-field-with-in-its-name/158819/6 "2019-01-08T20:59:26Z")
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