Unknown value v for field name – accepted values are – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.6

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Briefly, this error occurs when an unrecognized value is passed to a specific field in Elasticsearch. The field only accepts certain predefined values and the input provided does not match any of these. To resolve this issue, you should first check the documentation or the code to understand what values are accepted for this field. Then, ensure that the value you are trying to input matches one of these accepted values. If the value is being passed dynamically, add checks to ensure only valid values are used.

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This guide will help you check for common problems that cause the log ” Unknown value [” + v + “] for field [” + name + “] – accepted values are ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “Unknown value [” + v + “] for field [” + name + “] – accepted values are ” class name is FieldMapper.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } catch (IllegalArgumentException e) {
 throw new MapperParsingException("Unknown value [" + o + "] for field [" + name + "] - accepted values are " + values);
 }; initializer; XContentBuilder::field; Objects::toString).addValidator(v -> {
 if (v != null && values.contains(v) == false) {
 throw new MapperParsingException("Unknown value [" + v + "] for field [" + name + "] - accepted values are " + values);
 }  /**


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