# How to convert type in index
**URL:** https://discuss.elastic.co/t/how-to-convert-type-in-index/185082
**Category:** Elasticsearch
**Created:** [June 11, 2019, 3:55am UTC](https://discuss.elastic.co/t/how-to-convert-type-in-index/185082 "2019-06-11T03:55:46Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@shwesinhan](https://discuss.elastic.co/u/shwesinhan)
#### Post date: [June 11, 2019, 3:55am UTC](https://discuss.elastic.co/t/how-to-convert-type-in-index/185082/1 "2019-06-11T03:55:46Z")
Hi there,
I have issue recently. I have production index mapping where I defined "elapsed\_time" as "float", then later accidentally inject "elasped\_time" as "string". It becomes type conflict now.
When I re-index, I got this response
> failures": [
> {
> "index": "logstash-2019.05.new",
> "type": "logs",
> "id": "AWq1uGtoIXYchKQKQ\_9j",
> "cause": {
> "type": "mapper\_parsing\_exception",
> "reason": "failed to parse [elapsed\_time]",
> "caused\_by": {
> "type": "number\_format\_exception",
> "reason": "For input string: "0,104""
> }
> },
> "status": 400
> }
index is monthly format. but i don't want to delete index either
how do i solve it? plz kindly advise to me.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 9, 2019, 3:55am UTC](https://discuss.elastic.co/t/how-to-convert-type-in-index/185082/2 "2019-07-09T03:55:52Z")
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