Fix error: Failed to parse field

Elastic Stack ECE ECK Elastic Cloud Hosted Self Managed

 Error: failed to parse field [field] of type [type] in document with id [id] 

This error occurs when you try to index a document, but one of the field values doesn't match the expected data type. Elasticsearch rejects the document when it encounters incompatible values, like a string in a numeric field or an invalid IP address.

To fix this issue, make sure each field value matches the data type defined in the mapping.

When no explicit mapping exists, Elasticsearch uses dynamic mappings to infer a field's type based on the first value indexed.

For example, if you index:

 PUT test/_doc/1 {
  "ip_address": "179.152.62.82",
  "boolean_field": "off"
}

Without explicit mapping, Elasticsearch will treat ip_address and boolean_field as text, which might not be the intended result.

To avoid this, define the mapping explicitly:

 PUT test {
  "mappings": {
    "properties": {
      "ip_address": { "type": "ip" },
      "boolean_field": { "type": "boolean" }
    }
  }
}

To check the data type of the field causing the error, first get the mapping:

console GET your-index-name/_mapping

Make sure the incoming data matches the expected type. If not, you'll need to fix the data or update the mapping. If necessary, create a new index with the correct mapping and reindex your data.