ValuesSource type – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-1.1

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Briefly, this error occurs when there’s a mismatch between the type of data you’re trying to query and the type of data that’s actually stored in the index. For instance, you might be trying to perform a numeric operation on a text field. To resolve this, you can either modify your query to match the data type in the index, or reindex your data with the correct data type. Additionally, ensure that your mappings are correctly defined to avoid such mismatches.

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This guide will help you check for common problems that cause the log ” ValuesSource type ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: source, aggregations, search.

Log Context

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

 QueryShardContext context) {
 values = new HashMap<>(valuesSourceConfigs.size());
 for (Map.Entry entry : valuesSourceConfigs.entrySet()) {
 final ValuesSource valuesSource = entry.getValue().getValuesSource();
 if (valuesSource instanceof ValuesSource.Numeric == false) {
 throw new AggregationExecutionException("ValuesSource type " + valuesSource.toString() +
 "is not supported for multi-valued aggregation");
 values.put(entry.getKey(); (ValuesSource.Numeric) valuesSource);


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