# Error 400 (Bad Request) while updating

**URL:** <https://discuss.elastic.co/t/error-400-bad-request-while-updating/142152>\
**Category:** Elasticsearch\
**Created:** [July 30, 2018, 10:51am UTC](https://discuss.elastic.co/t/error-400-bad-request-while-updating/142152 "2018-07-30T10:51:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vijay\_kumar\_Ks](https://avatars.discourse-cdn.com/v4/letter/v/c77e96/32.png) [@vijay\_kumar\_Ks](https://discuss.elastic.co/u/vijay_kumar_Ks)\
**Post date:** [July 30, 2018, 10:51am UTC](https://discuss.elastic.co/t/error-400-bad-request-while-updating/142152/1 "2018-07-30T10:51:41Z")

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elasticsearch version: "5.1.2",  
code to update the existing document in elasticsearch  
script := elastic.NewScript(`ctx._source.new_field += params.vijay`).Param("vijay", "kumar").Lang("painless")  
fmt.Println("script", script)  
update, err := client.Update().Index("idx001").Type("sdoc").Id(t.Docid).Script(script).Do(ctx)  
if err != nil {  
// Handle error  
panic(err)  
}  
and this resulted to:  
script &{ctx.\_source.new\_field += params.vijay inline painless map[vijay:kumar]}  
panic: elastic: Error 400 (Bad Request): [script] unknown field [source], parser not found [type=illegal\_argument\_exception]

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 27, 2018, 11:01am UTC](https://discuss.elastic.co/t/error-400-bad-request-while-updating/142152/2 "2018-08-27T11:01:39Z")

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