Numeric value expected – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch expects a numeric value but receives a different data type, such as a string or boolean. This could be due to incorrect data input or a mismatch in the field data type. To resolve this, ensure that the input data matches the expected data type. If the error persists, check the field mapping in your index to ensure it’s set to the correct numeric type. If necessary, you may need to reindex your data with the correct mappings.

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This guide will help you check for common problems that cause the log ” numeric value expected ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: .

Log Context

Log “numeric value expected” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 double y = Double.NaN;  int element = 0;
 while (subParser.nextToken() != XContentParser.Token.END_ARRAY) {
 if (parser.currentToken() != XContentParser.Token.VALUE_NUMBER) {
 throw new OpenSearchParseException("numeric value expected");
 if (element == 1) {
 x = parser.doubleValue();
 } else if (element == 2) {


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