# Reuse of mappings
**URL:** https://discuss.elastic.co/t/reuse-of-mappings/39516
**Category:** Elasticsearch
**Created:** [January 19, 2016, 9:04am UTC](https://discuss.elastic.co/t/reuse-of-mappings/39516 "2016-01-19T09:04:48Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@bryan\_rasmussen](https://discuss.elastic.co/u/bryan_rasmussen)
#### Post date: [January 19, 2016, 9:04am UTC](https://discuss.elastic.co/t/reuse-of-mappings/39516/1 "2016-01-19T09:04:48Z")
I have a couple of types of documents that are essentially the same - so as I read this
[https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping.html)
```
Fields with:
the same name
in the same index
in different mapping types
map to the same field internally,
and must have the same mapping.
```
if it's inside the same index I don't actually have to define a mapping for a field with the name 'name' under document type active\_product if there is already a definition of a field with that name under type product because it will be given the same mapping by elasticsearch automatically.
Correct?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [January 19, 2016, 9:11am UTC](https://discuss.elastic.co/t/reuse-of-mappings/39516/2 "2016-01-19T09:11:45Z")
Depends how you defined the original mapping, if you created it against a single type then it won't work.
---
### Author:  [@bryan\_rasmussen](https://discuss.elastic.co/u/bryan_rasmussen)
#### Post date: [January 19, 2016, 9:21am UTC](https://discuss.elastic.co/t/reuse-of-mappings/39516/3 "2016-01-19T09:21:53Z")
ok well if I have
```
"mappings": {
"product" : {
"properties" : {
"currency" : {"type" : "string", "index": "not_analyzed"},
```
and then I create a new document type "active\_product" in the same index do I have to do a mapping for a currency field for that document type or will it just map active.product currency the same way that product currency is mapped ( if not is there a way to specify that this type inherits all of this types mappings plus defines it's own)?
---
### Author:  [@guilherme\_maranhao](https://discuss.elastic.co/u/guilherme_maranhao)
#### Post date: [January 6, 2017, 8:09pm UTC](https://discuss.elastic.co/t/reuse-of-mappings/39516/4 "2017-01-06T20:09:05Z")
Hi Bryan,
I'm facing the same issue in my index mapping. How did you solve it? I know I've read something about it in 2.3 version, but I can't find any docs related to it in 5.0.
Thank you,
Guilherme
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 10:04pm UTC](https://discuss.elastic.co/t/reuse-of-mappings/39516/5 "2017-07-05T22:04:25Z")