ValuesSource type valuesSource toString is not supported for aggregation – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.8-7.8

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Briefly, this error occurs when you’re trying to perform an aggregation on a field type that Elasticsearch doesn’t support for that specific aggregation. For instance, trying to perform a terms aggregation on a text field without keyword enabled. To resolve this, you can either change the field type to one that is supported for the aggregation you’re trying to perform, or use a different aggregation that is supported for the current field type. Alternatively, you can enable keyword on the text field if it’s not enabled.

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This guide will help you check for common problems that cause the log ” ValuesSource type ” + valuesSource.toString() + “is not supported for aggregation ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: source, search, aggregations.

Log Context

Log “ValuesSource type ” + valuesSource.toString() + “is not supported for aggregation ” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 SearchContext searchContext;
 Aggregator parent;
 boolean collectsFromSingleBucket;
 Map metadata) throws IOException {
 if (valuesSource instanceof Numeric == false) {
 throw new AggregationExecutionException("ValuesSource type " + valuesSource.toString() + "is not supported for aggregation " +;
 return new ExtendedStatsAggregator(name; (Numeric) valuesSource; config.format(); searchContext;
 parent; sigma; metadata);


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