# Logstash - Error parsing a concrete value into object field
**URL:** https://discuss.elastic.co/t/logstash-error-parsing-a-concrete-value-into-object-field/306559
**Category:** Logstash
**Created:** [June 7, 2022, 11:53am UTC](https://discuss.elastic.co/t/logstash-error-parsing-a-concrete-value-into-object-field/306559 "2022-06-07T11:53:07Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Thuunder7](https://discuss.elastic.co/u/Thuunder7)
#### Post date: [June 7, 2022, 11:53am UTC](https://discuss.elastic.co/t/logstash-error-parsing-a-concrete-value-into-object-field/306559/1 "2022-06-07T11:53:07Z")
Hello guys,
I have a pipeline on Logstash that is parsing and filtering some data from a kafka topic. Everything is working fine but from time to time i got this error message:
```auto
"error"=>{"type"=>"mapper_parsing_exception", "reason"=>"object mapping for [debug.input.request] tried to parse field [request] as object, but found a concrete value"
```
The `[debug.input.request]` is in fact an object:
```auto
"debug": {
"properties" : {
"input" : {
"properties" : {
"request" : {
"properties" : {
...
```
And since Logstash tried to parse a non object it is giving me the above error.
What i want to ask is the best way to catch when this field is a concrete value and map it to another field, this one not being an object.
Any ideias?
Regards
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [June 7, 2022, 4:38pm UTC](https://discuss.elastic.co/t/logstash-error-parsing-a-concrete-value-into-object-field/306559/2 "2022-06-07T16:38:35Z")
See [this](https://discuss.elastic.co/t/getting-illegal-state-exception-error-while-pushing-logs-to-elasticsearch/290029/2) answer, which addresses possible solutions.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2022, 4:38pm UTC](https://discuss.elastic.co/t/logstash-error-parsing-a-concrete-value-into-object-field/306559/3 "2022-07-05T16:38:54Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.