# Defining dynamic types in field.yml
**URL:** https://discuss.elastic.co/t/defining-dynamic-types-in-field-yml/149173
**Category:** Beats
**Tags:** beats-development
**Created:** [September 19, 2018, 6:07pm UTC](https://discuss.elastic.co/t/defining-dynamic-types-in-field-yml/149173 "2018-09-19T18:07:04Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@sentient](https://discuss.elastic.co/u/sentient)
#### Post date: [September 19, 2018, 6:07pm UTC](https://discuss.elastic.co/t/defining-dynamic-types-in-field-yml/149173/1 "2018-09-19T18:07:04Z")
I'm struggling a bit to define dynamic types in field.yml for my Statsdbeat
There are some fields that are predefined. But some some fields are dynamic.
My fields.yml is defined as
```auto
- key: statsdbeat
title: statsdbeat
description: test
fields:
- name: statsd
type: group
fields:
- name: bucket
type: text
ignore_above: 1024
description: >
statsd bucket
- name: val
type: long
description: >
value for the bucket
- name: type
type: keyword
ignore_above: 255
description: >
The type of statsd counter gauge histogram.
- name: context
type: object
object_type: keyword
dynamic: true
description: >
Contains user tags
```
When I look in Elastic search on the submitted index template I see
```auto
> GET _template/statsdbeat*
{
"statsdbeat-6.3.3": {
"order": 1,
"index_patterns": [
"statsdbeat-6.3.3-*"
],
"mappings": {
"doc": {
"_meta": {
"version": "6.3.3"
},
"date_detection": false,
"dynamic_templates": [
......
{
"statsd.context": {
"path_match": "statsd.context.*",
"mapping": {
"type": "keyword"
},
"match_mapping_type": "string"
}
},
{
"strings_as_keyword": {
"mapping": {
"type": "keyword",
"ignore_above": 1024
},
"match_mapping_type": "string"
}
}
],
```
This seems to be correct (?).
But when I submit a value for
"statsd.context.userField": "customValue"
The "statsd.context.userField" shows "No cached mapping"
I was expecting that new fields of type string would be mapped to keywords.
---
### Author:  [@jsoriano](https://discuss.elastic.co/u/jsoriano)
#### Post date: [September 22, 2018, 2:06pm UTC](https://discuss.elastic.co/t/defining-dynamic-types-in-field-yml/149173/2 "2018-09-22T14:06:19Z")
Hi @sentient,
Configuration and mapping look good, yes. Where are you seeing the "No cached mapping" message? If it is in kibana you may need to refresh the field list from the Index patterns management view.
---
### Author:  [@sentient](https://discuss.elastic.co/u/sentient)
#### Post date: [September 25, 2018, 3:45pm UTC](https://discuss.elastic.co/t/defining-dynamic-types-in-field-yml/149173/3 "2018-09-25T15:45:57Z")
It was indeed just the UI of Kibana that threw me off.
all good
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 23, 2018, 3:50pm UTC](https://discuss.elastic.co/t/defining-dynamic-types-in-field-yml/149173/4 "2018-10-23T15:50:43Z")
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