# Object mapping error in ELK **URL:** \ **Category:** Elasticsearch\ **Created:** [August 25, 2018, 7:41am UTC](https://discuss.elastic.co/t/object-mapping-error-in-elk/146004 "2018-08-25T07:41:21Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![mrashid](https://avatars.discourse-cdn.com/v4/letter/m/9fc348/32.png) [@mrashid](https://discuss.elastic.co/u/mrashid)\ **Post date:** [August 25, 2018, 7:41am UTC](https://discuss.elastic.co/t/object-mapping-error-in-elk/146004/1 "2018-08-25T07:41:21Z")
I am using jenkins-logstash plugin to dynamically ship data. The problem however is that I have a field by name 'db2.ci.server' . It is this filed where I am getting the below error- //,"type":"illegal\_argument\_exception","reason":"Can't merge a non object mapping [data.buildVariables.db2.ci.server] with an object mapping [data.buildVariables.db2.ci.server]"},"status":400} Is there any problem with the field name as it is alphanumeric ? I cannot change the field name. I don't have the mapping as Elastic Search rejects the entire document. Any idea on what best can be done ? Thanks in advance. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [August 27, 2018, 12:38am UTC](https://discuss.elastic.co/t/object-mapping-error-in-elk/146004/2 "2018-08-27T00:38:20Z")
What is the mapping of the field? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 24, 2018, 12:38am UTC](https://discuss.elastic.co/t/object-mapping-error-in-elk/146004/3 "2018-09-24T00:38:21Z")
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