# Logstash mutate can't convert 2 fields at once
**URL:** https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947
**Category:** Logstash
**Created:** [February 19, 2019, 6:58am UTC](https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947 "2019-02-19T06:58:45Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@ksemaev](https://discuss.elastic.co/u/ksemaev)
#### Post date: [February 19, 2019, 6:58am UTC](https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947/1 "2019-02-19T06:58:45Z")
When I have both a.b and c.d in one log entry, and try to mutate-convert them, only first conversion occures, and the second is not, so it causes logstash to throw `failed to parse field` warning.
Current config is:
filter {
mutate {
convert =\> {
"[query][from]" =\> "string"
"[query][to]" =\> "string"
}
}
}
Can anybody advice on how to convert both fileds at once?
---
### Author:  [@ksemaev](https://discuss.elastic.co/u/ksemaev)
#### Post date: [February 19, 2019, 7:47am UTC](https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947/2 "2019-02-19T07:47:16Z")
When I use the construction above I get parsing error about `query.to` field. If In filter I put converts in that order:
convert =\> {
"[query][to]" =\> "string"
"[query][from]" =\> "string"
}
I get error regarding `query.from` field, which makes me think that somehow only one convert action applies, if both fields are present in log entry
---
### Author:  [@ksemaev](https://discuss.elastic.co/u/ksemaev)
#### Post date: [February 19, 2019, 8:09am UTC](https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947/3 "2019-02-19T08:09:09Z")
tried the same with not nested fields - same behaviour
---
### Author:  [@ksemaev](https://discuss.elastic.co/u/ksemaev)
#### Post date: [February 20, 2019, 8:52am UTC](https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947/4 "2019-02-20T08:52:20Z")
All is good, it was elastic index, who refused to reindex properly
Not logstash problem. please close the issue
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 20, 2019, 8:52am UTC](https://discuss.elastic.co/t/logstash-mutate-cant-convert-2-fields-at-once/168947/5 "2019-03-20T08:52:22Z")
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