# Defining different metadata "\_id" field value
**URL:** https://discuss.elastic.co/t/defining-different-metadata-id-field-value/138356
**Category:** Elasticsearch
**Created:** [July 3, 2018, 10:44am UTC](https://discuss.elastic.co/t/defining-different-metadata-id-field-value/138356 "2018-07-03T10:44:10Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@pastechecker](https://discuss.elastic.co/u/pastechecker)
#### Post date: [July 3, 2018, 10:44am UTC](https://discuss.elastic.co/t/defining-different-metadata-id-field-value/138356/1 "2018-07-03T10:44:10Z")
Hello colleagues!
I am loading documents structured as follows:
> {"vulnid": "CVE-2018-0001", "product": ["juniper junos 12.1x46 d10", "juniper junos 15.1x53 d63"], "description": "A remote, unauthenticated attacker may be able to execute code by exploiting a use-after-free defect found in older versions of PHP", "cvss:confidentiality-impact": "PARTIAL", "published": "2018-01-10T17:29:00.930-05:00"}
I am using **ESBULK** tool for faster loading times, but I cannot control the metadata “\_id” field with it.
> {
> "\_index": "softwarebugs",
> "\_type": "default",
> **"\_id": "aRKoX2QBV7uFZj55bVLi",**
> "\_version": 1,
> "\_score": null,
> "\_source": {
> **"vulnid": "CVE-2018-0001",**
> "product": [
> "juniper junos 12.1x46 d10",
> ...(truncated data)
The \_id is automatically created for me. ("\_id": "aRKoX2QBV7uFZj55bVLi",)
Is there a way to manipulate the data already imported to accomplish something like:
> {
> "\_index": "softwarebugs",
> "\_type": "default",
> **"\_id": "CVE-2018-0001",**
> "\_version": 1,
> "\_score": null,
> "\_source": {
> **"vulnid": "CVE-2018-0001",**
> "product": [
> "juniper junos 12.1x46 d10",
> ...(truncated data)
Most optimally would be to create mapping before using esbulk tool (and specify override to the "\_id" to use "vulnid" field value as "\_id".
Thank you for hints.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 31, 2018, 10:47am UTC](https://discuss.elastic.co/t/defining-different-metadata-id-field-value/138356/2 "2018-07-31T10:47:37Z")
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