# Tags being added by whom? kafka/elasticsearch plugins **URL:** \ **Category:** Logstash\ **Created:** [October 16, 2018, 11:18am UTC](https://discuss.elastic.co/t/tags-being-added-by-whom-kafka-elasticsearch-plugins/152638 "2018-10-16T11:18:52Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Miguel\_Oliveira](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/miguel_oliveira/32/36562_2.png) [@Miguel\_Oliveira](https://discuss.elastic.co/u/Miguel_Oliveira)\ **Post date:** [October 16, 2018, 11:18am UTC](https://discuss.elastic.co/t/tags-being-added-by-whom-kafka-elasticsearch-plugins/152638/1 "2018-10-16T11:18:53Z")
Hello, We currently have a kafka input sending to an elasticsearch output. We're not defining any tags in between but sometimes, not all the times, a document is added to ES containing the following a field tags with a value that is the topic name, but with the underscores replaced by dashes. An example, we're ingesting from a topic called "User\_Conversion\_LAB" and sometimes a field "tags" is added with the value "user-conversion-lab". How can we find who's adding the tag and why is it random? The same behavior is found when using the avro codec and ingesting a message that is not according to the schema. Sometimes it only adds the tag "\_avroparsefailure" other times it adds "\_avroparsefailure, user-conversion-lab". Can you help us out? Thank you. Best regards, Miguel ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 13, 2018, 11:24am UTC](https://discuss.elastic.co/t/tags-being-added-by-whom-kafka-elasticsearch-plugins/152638/2 "2018-11-13T11:24:28Z")
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